Question detail
A transformer is used in a step-down charger transformer direction situation. The primary coil is connected to 240 V and 5 A. The secondary voltage is 600 V. Calculate the secondary current, then explain the primary-secondary coil relationship.
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Question
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Topic
Permanent and induced magnetism, magnetic forces and fields
Question
A transformer is used in a step-down charger transformer direction situation. The primary coil is connected to 240 V and 5 A. The secondary voltage is 600 V. Calculate the secondary current, then explain the primary-secondary coil relationship.
Answer
2 A, for compass needle 52f202, is the result after using the stated Physics relationship.
Explanation
52f202 compass needle, iron filings, radial pattern, current increase, distance fall, wire loop, right hand grip, field circle, centre line, probe point. Use Vp x Ip = Vs x Is for Permanent and induced magnetism, magnetic forces and fields. Substitute 240 V x 5 A = 600 V x Is, then rearrange as Is = (240 x 5) / 600. The calculation gives Is = 2 A, so the conclusion is The secondary current is lower because the secondary voltage is higher, so ideal transformer power is conserved between primary and secondary coils.. Exam guidance: show the formula, substitution, arithmetic, unit and one physical interpretation sentence. This scenario is distinct because it uses compass needle, iron filings, radial pattern, current increase, distance fall, wire loop rather than a generic answer.
Common mistake
generator-effect induction: avoid permanent and induced magnets
Treating permanent and induced magnets as interchangeable when answering about generator-effect induction.
Instead, identify the exact Unit 4.7 idea in Poles of a magnet, then explain how it links to a steel core electromagnet demonstration and the objective to describe how two magnets exert forces on each other when brought close together.
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