Measuring Electricity -Multiple Choice Questions Quiz

Question 1: What is the SI unit of electric current?

(a) Joule (J)
(b) Volt (V)
(c) Ampere (A)
(d) Ohm (Ω)

Question 2: Which instrument is used to measure electric current in a circuit?

(a) Voltmeter
(b) Ammeter
(c) Ohmmeter
(d) Galvanometer

Question 3: What does a voltmeter measure in an electric circuit?

(a) Electric current
(b) Electrical resistance
(c) Electric potential difference (voltage)
(d) Electric charge

Question 4: The resistance of an electrical component is measured in:

(a) Amperes (A)
(b) Volts (V)
(c) Ohms (Ω)
(d) Watts (W)

Question 5: What does a wattmeter measure?

(a) Electric current
(b) Voltage
(c) Power
(d) Resistance

Question 6: What is the formula to calculate electrical power in a direct current (DC) circuit?

(a) Power = Voltage × Resistance
(b) Power = Current × Resistance
(c) Power = Voltage × Current
(d) Power = Voltage ÷ Current

Question 7: In an electric circuit, what does the term 'voltage' refer to?

(a) The amount of current flowing through the circuit
(b) The opposition to the flow of current
(c) The potential difference between two points in the circuit
(d) The amount of electrical charge stored in the circuit

Question 8: Which of the following materials is a good electrical conductor?

(a) Rubber
(b) Glass
(c) Copper
(d) Plastic

Question 9: What is the primary function of a circuit breaker in an electrical circuit?

(a) To measure electric current
(b) To measure voltage
(c) To control the flow of electricity
(d) To measure electrical resistance

Question 10: Which electrical parameter is analogous to the flow of water through a pipe?

(a) Electric current
(b) Electric potential difference (voltage)
(c) Electrical resistance
(d) Electric power

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Results:

Total score: /10

Answer key:

Question 1: c

Question 2: b

Question 3: c

Question 4: c

Question 5: c

Question 6: c

Question 7: c

Question 8: c

Question 9: c

Question 10: a