GCSE Voltage

What is resistance measured in?

• Amperes

• Ohms

• Volts

• Coulombs

State the formula linking potential difference, current and resistance.

• V = I + R

• V = I x R

• V = I / R

• V = I^2 * R

If the voltage across a resistor is 12V and the current passing through it is 2A, what is the resistance?

• 6

• 8

• 4

• 3

A resistor has a resistance of 10 ohms. If the current passing through it is 0.5A, what is the voltage across the resistor?

• 5 volts

• 2 volts

• 7 volts

• 12 volts

In a series circuit, if the voltage across one resistor is 6V and the voltage across another resistor is 4V, what is the total voltage across the circuit?

• 10V

• 0V

• 14V

• 2V

In a series circuit, if the resistance of one resistor is 2 ohms and the resistance of another resistor is 3 ohms, what is the total resistance of the circuit?

• 2

• 3

• 6

• 5

In a parallel circuit, if the current passing through one resistor is 0.5 A and the current passing through another resistor is 0.3 A, what is the total current passing through the circuit?

• 0.2A

• 1.3A

• 0.5A

• 0.8A

In a series circuit, if the voltage across one resistor is 8V and the current passing through it is 2A, what is the resistance?

• 2

• 4

• 16

• 6

In a series circuit, if the voltage across one resistor is 10V and the resistance is 5 ohms, what is the current passing through it?

• 2A

• 5A

• 1A

• 20A

In a series circuit, if the voltage across one resistor is 12V and the current passing through it is 3A, what is the power dissipated by the resistor?

• 36W

• 24W

• 15W

• 9W