Edexcel IGCSE - Electricity

What is the unit for potential difference?

• V

• A

• W

• J

What is the symbol for current?

• P

• I

• V

• R

What is the unit for current?

• C

• J

• A

What is the equation for Ohm's law?

• P = IV

• I = VR

• Q = IT

• V = IR

What is the resistance of a filament bulb with 3V and 2A?

• 6

What variable symbol has the units 'W'?

• Q

• I

• E

• P

Assuming all bulbs are identical, what would the potential difference be if each cell provides 3V?

• Series = 3V, 3V

  Parallel = 3V, 3V

• Series = 6V, 6V

  Parallel = 3V, 3V

• Series = 3V, 3V

  Parallel = 6V, 6V

• Series = 6V, 6V

  Parallel = 6V, 6V

Current is ...

• force of electricity

• the amount of energy in the circuit

• the total charge

• the rate of flow of charge

Pick the true equation

• I = Qt

• Q = It

• t = IQ

• I = t/Q

Pick the true equation

• E = QV

• Q = EV

• E = V/Q

• E = Q/V