The motor effect common mistakes

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a bar magnet and plotting compass practical and the objective to state that when a current flows through a conducting wire a magnetic field is produced around the wire.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a steel core electromagnet demonstration and the objective to describe how the strength of the magnetic field around a wire depends on current through the wire.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a current-carrying wire between magnetic poles and the objective to describe how the strength of the magnetic field around a wire depends on distance from the wire.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a loudspeaker coil moving in a magnetic field and the objective to describe how shaping a wire to form a solenoid increases the strength of the magnetic field created by a current.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to an alternator producing an AC output trace and the objective to state that the magnetic field inside a solenoid is strong and uniform.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a dynamo producing a DC output trace and the objective to describe the magnetic field around a solenoid as having a similar shape to that of a bar magnet.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a moving-coil microphone investigation and the objective to state that adding an iron core increases the strength of the magnetic field of a solenoid.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a step-up transformer on the National Grid and the objective to define an electromagnet as a solenoid with an iron core.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a step-down transformer for a low-voltage device and the objective to describe how the magnetic effect of a current can be demonstrated.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a student comparing motor and generator effects and the objective to draw the magnetic field pattern for a straight wire carrying a current.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a calculation using primary and secondary coils and the objective to draw the magnetic field pattern for a solenoid, showing the direction of the field.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a bar magnet and plotting compass practical and the objective to explain how a solenoid arrangement can increase the magnetic effect of the current.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a steel core electromagnet demonstration and the objective to apply WS 2.2 when drawing magnetic field patterns for a current-carrying wire and solenoid.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a current-carrying wire between magnetic poles and the objective to interpret diagrams of electromagnetic devices in order to explain how they work.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electromagnetism, then explain how it links to a loudspeaker coil moving in a magnetic field and the objective to apply WS 1.4 when explaining electromagnetic devices from diagrams.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to an alternator producing an AC output trace and the objective to describe the motor effect as the force on a current-carrying conductor placed in a magnetic field.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a dynamo producing a DC output trace and the objective to state that the magnet producing the field and the conductor exert a force on each other.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a moving-coil microphone investigation and the objective to use Fleming's left-hand rule to represent the relative orientation of force, current and magnetic field.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a step-up transformer on the National Grid and the objective to recall the factors that affect the size of the force on a current-carrying conductor.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a step-down transformer for a low-voltage device and the objective to recall that the force depends on magnetic flux density, current and length of conductor in the field when the conductor is at right angles to the field.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a student comparing motor and generator effects and the objective to recall and apply the equation F = B x I x l for a conductor at right angles to a magnetic field.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a calculation using primary and secondary coils and the objective to identify force F in newtons, magnetic flux density B in tesla, current I in amperes and length l in metres.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to rearrange F = B x I x l to calculate magnetic flux density, current or length where appropriate.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a steel core electromagnet demonstration and the objective to apply MS 3b and MS 3c when using the motor-effect equation.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Fleming's left-hand rule (HT only), then explain how it links to a current-carrying wire between magnetic poles and the objective to recognise that the motor-effect equation is given on the Physics equation sheet.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electric motors (HT only), then explain how it links to a loudspeaker coil moving in a magnetic field and the objective to state that a coil of wire carrying a current in a magnetic field tends to rotate.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electric motors (HT only), then explain how it links to an alternator producing an AC output trace and the objective to describe rotation of a current-carrying coil in a magnetic field as the basis of an electric motor.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electric motors (HT only), then explain how it links to a dynamo producing a DC output trace and the objective to explain how the force on a conductor in a magnetic field causes rotation of the coil in an electric motor.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electric motors (HT only), then explain how it links to a moving-coil microphone investigation and the objective to link opposite forces on the sides of a current-carrying coil to the turning effect in an electric motor.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Electric motors (HT only), then explain how it links to a step-up transformer on the National Grid and the objective to use motor-effect reasoning to explain the operation of a simple electric motor.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a step-down transformer for a low-voltage device and the objective to state that loudspeakers and headphones use the motor effect.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a student comparing motor and generator effects and the objective to describe how variations in current in an electrical circuit are converted into pressure variations in sound waves.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a calculation using primary and secondary coils and the objective to explain how a moving-coil loudspeaker works.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a bar magnet and plotting compass practical and the objective to explain how headphones use the motor effect to produce sound.

motor-effect force direction: avoid motors and generators

Treating motors and generators as interchangeable when answering about motor-effect force direction.

Instead, identify the exact Unit 4.7 idea in Loudspeakers (physics only) (HT only), then explain how it links to a steel core electromagnet demonstration and the objective to link the motion of the coil or cone to pressure variations in the surrounding air.