Quiz  /  MCQ On Ohms Law

  • 1. 
    If a current of 5 Amperes flows through the conductor. The number of electrons per second will is

  • 1.6 x 10
  • 3.12 x 10
  • 4 x 10
  • 7.68 x 10

  • 2. 
    Ohm’s law is true for

  • Metallic conductors at low temperature
  • Metallic conductors at high temperature
  • For electrolytes, when current passes through them
  • For diode when current flows

  • 3. 
    An example of non-ohmic resistance is

  • Diode
  • Tungsten wire
  • Carbon resistance
  • Copper wire

  • 4. 
    An EMF source of 8.0 V is connected to a purely resistive electrical appliance. An electric current of 2.0 A flows through it. What is the resistance offered by the electrical appliances?

  • 4 ohm
  • 6 ohm
  • 2 ohm
  • 3 ohm

  • 5. 
    A potential difference of 10 V is applied across a conductor whose resistance is 2.5 ohm. What is the value of current flowing through it?

  • 4 amperes
  • 2 amperes
  • 6 amperes
  • 10 amperes

  • 6. 
    If the conductor resistance is 50 ohm and the current passing through it is 5 A. What is the value of potential difference?

  • 150 V
  • 250 V
  • 50 V
  • 15 V

  • 7. 
    When the length of the conductor is doubled and the area of cross-section remains the same then its resistance

  • Remains the same
  • Will be doubled
  • Will become half
  • Will increase by four times

  • 8. 
    The current passing through a resistor in a circuit is 1 A when the voltage across the same resistor is 10 V. What is the value of current when the voltage across the resistor is 8 V

  • 0.8 A
  • 8 A
  • 80 A
  • 18 A
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