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WorksheetsE103: revision 6
Total questions: 10
Worksheet time: 5mins
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
