Current electricity Key Terms

current

The rate of flow of electric charge, measured in amperes (A). In Current electricity, use this term precisely by linking it to the relevant circuit quantity, measurement unit, and physical relationship rather than treating it as a generic label.

potential difference

The energy transferred per unit charge between two points in a circuit, measured in volts (V).

potential divider

A circuit arrangement that divides the input voltage into smaller output voltages based on the ratio of resistances.

output voltage

The voltage across a specific component in a circuit, determined by the potential divider configuration.

potential divider

A circuit configuration that divides the input voltage into smaller output voltages based on the ratio of resistances.

output voltage

The voltage that is produced across a component in a circuit, particularly in a potential divider setup.

LDR

A Light Dependent Resistor (LDR) is a resistor whose resistance decreases with increasing incident light intensity.

thermistor

A thermistor is a type of resistor whose resistance varies significantly with temperature, often used for temperature sensing.

Potential Divider

A circuit configuration that divides the input voltage into smaller output voltages based on the ratio of resistances.

Output Voltage

The voltage across a specific component in a circuit, determined by the potential divider formula and the resistances used.

Electromotive Force (emf)

The energy supplied per unit charge by a source, measured in volts (V). In Current electricity, use this term precisely by linking it to the relevant circuit quantity, measurement unit, and physical relationship rather than treating it as a generic label.

Terminal Potential Difference

The potential difference across the terminals of a cell when current is flowing, accounting for internal resistance.

terminal potential difference

The potential difference across the terminals of a power source when a current is flowing.

lost volts

The potential difference lost due to internal resistance within a power source when current flows.

electromotive force (emf)

The energy supplied per unit charge by a cell or battery, measured in volts (V).

internal resistance

The resistance within a cell or battery that causes a drop in the terminal potential difference, measured in ohms (Ω).

Electromotive Force (emf)

The energy supplied per unit charge by a cell or battery, measured in volts (V).

Internal Resistance

The resistance within a cell or battery that causes a drop in the terminal potential difference when current flows, measured in ohms (Ω).