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Electricity & Magnetism - Voltage MCQs

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Electricity & Magnetism - Voltage

Electricity & Magnetism - Voltage MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
A 9 V battery provides approximately how much energy per coulomb of charge?
A. 9 joules
B. 1 joule
C. 81 joules
D. 0 joule
Correct Answer: A
Since 1 volt = 1 joule per coulomb, 9 V corresponds to 9 J/C.
CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
How is a voltmeter connected in a circuit?
A. Between no points
B. In parallel across the component
C. In series only
D. Directly shorted across the battery with zero resistance
Correct Answer: B
A voltmeter measures the difference in potential between two points.
CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
What instrument measures potential difference?
A. Voltmeter
B. Thermometer
C. Ammeter
D. Ohmmeter only
Correct Answer: A
A voltmeter is connected across two points.
CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
Which equation relates voltage V, energy W and charge Q?
A. V = W/Q
B. V = IR² only
C. V = m/g
D. V = Q/W
Correct Answer: A
One volt equals one joule per coulomb.
CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
What is the SI unit of voltage?
A. Watt
B. Ampere
C. Volt
D. Ohm
Correct Answer: C
Potential difference is measured in volts.
CSS - PMS - CCE - PCS - General Science Electricity & Magnetism - Voltage
What is voltage?
A. Force per unit mass
B. Resistance only
C. Rate of charge flow
D. Electric potential difference, or energy transferred per unit charge
Correct Answer: D
Voltage measures potential-energy change per coulomb of charge.
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