Topic 5 - Electicity And Magnetism

Question 1

Electric current

Answer 1

Is the rate of flow of electrical charge (charge flower/time taken)

Question 2

Electromotive force

Answer 2

Is the total energy difference per unit charge around the circuit (it is the potential difference when no current flows in a circuit).

Question 3

Electronvolt

Answer 3

The energy gained by an electron when it moves through a potential difference of one volt.

Question 4

Resistance

Answer 4

Of a component is the ratio between the potential difference across the component/circuit and the current through it.

Question 5

Ohm’s law

Answer 5

When the temperature is kept constant, the. Urgent through a metallic conductor is proportional to the potential difference across it.

Question 6

Electrical resistance

Answer 6

The ratio of potential difference to current.

Question 7

Electric potential difference

Answer 7

Between two points is the work done per unit charge to move a small positive charge between two points