AQA A-Level Physics 3.5 Electricity 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 number of electrons in the circuit

The drift velocity

The resistance of the wire

The number density of charge carriers

An ohmic conductor

A filament lamp at high current

A semiconductor diode

A negative temperature thermistor

It decreases because the electrons are given more energy and move faster

It increases because the ions vibrate more and impede the electrons

It stays exactly the same regardless of any change in temperature

It falls to zero once the wire becomes hot enough to glow brightly

It halves

It stays the same

It doubles

It quadruples

$16$ ohm

$8.0$ ohm

$2.0$ ohm

$4.0$ ohm

$P = I^2 R$

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

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

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

$2.0$ V

$8.0$ V

$5.0$ V

$10$ V

The EMF of the cell itself decreases as more charge flows through it

The external load resistance increases steadily while current flows

Some energy per coulomb is dissipated across the internal resistance

The current periodically reverses direction inside the cell as it works

The EMF of the cell read at the y-intercept

The external resistance connected to the cell

The total power dissipated within the circuit

The negative of the internal resistance

Conservation of charge at a junction

Conservation of energy around a loop

Ohm's law for a resistor

The conservation of momentum

It increases

It decreases

It stays constant

It becomes infinite