E103: revision 6

On a series circuit, the voltage is 230V and the resistance is 20Ω. What will the current be?

• 15.5A

• 11.5A

• 5.5A

• 55A

On a parallel circuit, there are three resistors with an individual resistance of 10Ω, 25Ω and 40Ω respectively. The voltage is 230V. What is the total resistance of the circuit?

• less than 10Ω

• 75Ω

• ≥ 40Ω

• between 10Ω and 40Ω

In a series circuit, the voltage is 230V and the total resistance is 23Ω. The expected current is 10A but when tested, the meter reads 9A. Why would the reading be lower than the expected calculated current?

• the meter might be wrong

• the meter might be broken

• the leads and the meter have some resistance

• someone forgot to check the meter battery

In a series circuit, the voltage is 230V, the total resistance is 46Ω and the current is 5A. What is the power?

• 230W

• 1150W

• 10,580W

• 276W

What does an ammeter measure?

• current only

• voltage only

• resistance only

• current, voltage and resistance

What does a multimeter measure?

• current only

• voltage only

• resistance only

• current, voltage and resistance

Which of the following is NOT true of a volt stick?

• they can detect the presence of voltage

• they have high internal resistance

• they can provide measurements of voltage

• they do not require contact with the conductors

Which of the following is NOT true of an ammeter?

• they are connected in parallel

• they have a low internal resistance

• they can measure AC and DC

• they have different scale settings

When testing resistance between cables, if the insulation is working properly, then the resistance reading should be what?

• infinity

• almost zero

• less than zero/negative

• 100,000Ω

What is considered a pass value for an earth continuity test?

• less than 0.5Ω

• less than or equal to 0.5Ω

• greater than 0.5Ω

• greater than or equal to 1MΩ