Electrical Quantities

Which diagram shows the arrangement of the ammeter and voltmeter to obtain readings to find the power of a lamp?

• A

• B

• C

• D

The diagram shows a circuit. Which circuit diagram shows this circuit?

• A

• B

• C

• D

What is the potential difference across the 60Ω resistor?

• 9 V

• 18 V

• 36 V

• 54 V

What is the potential difference (p.d.) across the resistor R?

• 12 V

• 22 V

• 30 V

• 68 V

The currents in the four resistors are I1, I2, I3 and I4. Which equation is correct?

• I1 = I2 – I3

• I2 = I1 + I4

• I3 = I4 – I1

• I4 = I2 + I3

Which arrangement of resistors gives the greatest ammeter reading?

• A

• B

• C

• D

In which circuit are the currents in the resistors equal and in which circuit are the potential differences across the resistors equal?

• A

• B

• C

• D

The diagram shows a circuit containing five resistors connected to a battery. In which resistor is the current the smallest?

• A

• B

• C

• D

What is the current in the ammeter?

• 5 mA

• 20 mA

• 0,2 A

• 5 A

What is the reading on the ammeter?

• 0,33 A

• 0,5 A

• 0,67 A

• 1.0 A