Edexcel A-Level Physics Electric circuits overview quiz quiz

The energy transferred per unit charge

The resistance per unit length

The rate of flow of electric charge

The force per unit charge

The potential difference applied across the two ends of the wire

The total volume of the wire through which the charge is flowing

The number density of charge carriers per unit volume of the wire

The drift velocity of the charge carriers

An ohmic conductor

A filament lamp, whose resistance rises as it heats up

A diode, which conducts in only one direction

A thermistor, whose resistance depends on temperature

It increases

It decreases

It stays constant

It becomes infinite

It doubles

It stays the same

It halves

It quadruples

$P = \frac{I}{V}$

$P = \frac{R}{V^2}$

$P = \frac{V}{I}$

$P = I^2 R$

Conservation of energy around a loop

Conservation of charge at a junction

Ohm's law for a resistor

The conservation of momentum

$2.0$ V

$4.0$ V

$6.0$ V

$8.0$ V

The EMF of the cell, read straight off the steepness of the line

The external resistance connected in the circuit alongside the cell

The negative of the internal resistance

The power dissipated by the cell as the current through it increases

The EMF of the cell itself decreases as charge flows around the circuit over time

The external resistance in the circuit steadily increases while the current is flowing

The current periodically reverses direction as it passes through the cell each cycle

Some energy per coulomb is dissipated across the internal resistance