Electric Current and Ohm's Law Questions and Answers

Electric Current and Ohm's Law

Showing 10 of 25 questions
1. The unit of electric current is
  • A) Volt
  • B) Watt
  • C) Ampere
  • D) Ohm
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2. Ohm's Law defines the relationship between
  • A) Voltage, Current, and Power
  • B) Current, Voltage, and Resistance
  • C) Resistance, Inductance, and Capacitance
  • D) Charge, Energy, and Power
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3. The SI unit of resistance is
  • A) Ampere
  • B) Volt
  • C) Ohm
  • D) Coulomb
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4. If resistance increases, for a constant voltage, current will
  • A) Increase
  • B) Decrease
  • C) Remain same
  • D) Become zero
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5. The potential difference is measured in
  • A) Watt
  • B) Ohm
  • C) Volt
  • D) Ampere
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6. A conductor has resistance 10 Ω and current 2 A flows through it. The potential difference is
  • A) 5 V
  • B) 10 V
  • C) 20 V
  • D) 2 V
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7. Which of the following is a good conductor?
  • A) Glass
  • B) Silver
  • C) Rubber
  • D) Wood
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8. The instrument used to measure current is
  • A) Voltmeter
  • B) Ammeter
  • C) Galvanometer
  • D) Wattmeter
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9. The instrument used to measure voltage is
  • A) Voltmeter
  • B) Ammeter
  • C) Rheostat
  • D) Multimeter
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10. Resistance of a conductor depends on
  • A) Length and area
  • B) Color
  • C) Shape only
  • D) Temperature only
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