21st
Feb
Ohms Law MCQ

Ohms Law MCQ

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  • 21st Feb, 2023
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Take Ohms Law MCQ Test & Online Quiz to test your Knowledge

Practice best Ohms Law MCQ Questions that checks your basic knowledge of Ohms Law. This Ohms Law MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. apart from this, you can also download Ohms Law MCQ PDF, completly free.

Ohms Law MCQ Test

1) Ohm’s law is not applicable to which of the following options?

  • A. Dc circuits
  • B.High currents
  • C.Small resistors
  • D.Semi-conductors

2) Which of the statement correctly represents Ohm’s law?

  • A. R = VI
  • B.V = IR
  • C.V = R/I
  • D.I = R/V

3) What is the unit of voltage?

  • A. Volt
  • B.Watt
  • C.Ampere
  • D.Coulomb

4) Which of the following components obey ohm's law?

  • A. Resistors
  • B.Ohmic components
  • C.Non-ohmic components
  • D.All of the above

5) An electrical bulb draws 5 A current when connected to a 100-V wall outlet, the resistance of bulb is:

  • A. 20 Ω
  • B.50 Ω
  • C.100 Ω
  • D.500 Ω
Download Free : Ohms Law MCQ PDF

6) Ohm's law describes the mathematical relationship between

  • A. resistor size and resistor value
  • B.ohms, kilohms, and megohms
  • C.resistance, voltage, and current
  • D.None of the above

7) Ohm's law states:

  • A. VI2 = R
  • B.V = IR
  • C.V/I = R2
  • D.None of the above

8) 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?

  • A. 4 amperes
  • B.2 amperes
  • C.6 amperes
  • D.10 amperes

9) When the length of the conductor is doubled and the area of cross-section remains the same then its resistance ____.

  • A. will be doubled
  • B.remains the same
  • C.will become half
  • D.will increase by four times

10) Least current will flow through ___.

  • A. 18 ohm resistor
  • B.5 ohm resistor
  • C.10 ohm resistor
  • D.25 ohm resistor

11) What is the unit of resistance?

  • A. ohm
  • B.ohm2
  • C.Volt
  • D.Watt

12) What is the unit of current?

  • A. amphere
  • B.volt
  • C.watt
  • D.ohm

13) Ohmic components obey Ohm’s law.

  • A. True
  • B.False

14) Which among the following is ohmic component?

  • A. resistors
  • B.power
  • C.force
  • D.None of the above

15) The potential difference across a 5 kΩ is 12 V. Find the current flowing through the resistor:

  • A. 0.998 mA
  • B.1.77 mA
  • C.2.4 mA
  • D.60 mA

16) Is ampere is the unit of resistance?

  • A. Yes
  • B.No

17) Approximately how many milli-amperes of current flow through a circuit with a 40 V source and 6.8 kΩ of resistance?

  • A. 27.2 mA
  • B.59 mA
  • C.5.9 mA
  • D.590 mA

18) According to Ohm's Law:

  • A. V is inversely proportional to I
  • B.V is directly proportional to I
  • C.V is directly proportional to vI
  • D.All of the above

19) In Physics, potential difference represents ____.

  • A. Current
  • B.Resistor
  • C.Voltage
  • D.None of the above

20) How much current passing through 10kΩ resistor that will produce a voltage of 8V across it?

  • A. 0.0008A
  • B.0.0008mA
  • C.0.00008A
  • D.None of the above

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