Resistance and Power Questions and Answers

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Resistance and Power questions with answers are essential for electronics and electrical engineering students preparing for GATE, DRDO, ISRO, and other technical exams. Understanding the relationship between current, voltage, and resistance helps in analyzing and designing efficient electrical circuits. This topic covers Ohm’s law, power dissipation, resistivity, and network theorems with clear explanations and practical examples. These programming-style electronics MCQs help learners apply theoretical knowledge to real-world problems. Practice these Resistance and Power questions and answers to strengthen your technical fundamentals and boost your exam confidence.

Resistance and Power

Showing 10 of 72 questions

11. With Ohm's law:

  • current is inversely proportional to resistance
  • resistance is directly proportional to voltage
  • voltage is indirectly proportional to power
  • current is directly proportional to resistance
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12.  Power is defined as:

  • the rate at which energy is used
  • watts
  • energy
  • the rate at which energy is generated
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13. What is the most commonly used conductor in electronics?

  • aluminum
  • copper
  • gold
  • silver
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14. With Ohm's law, no change in resistance means that current and voltage will be:

  • directly proportional
  • unable to produce energy
  • the same
  • inversely proportional
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15. A potentiometer has how many leads?

  • 1
  • 2
  • 3
  • 4
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16. What is the ratio of 13 to 47 expressed in percent?

  • 2.76%
  • 27.7%
  • 3.60%
  • 36.1%
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17. What happens to current and resistance if the voltage doubles?

  • Current doubles and resistance doubles.
  • Current doubles and resistance is halved.
  • Current remains the same and resistance doubles.
  • Current doubles and resistance remains the same.
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18. One problem with mechanically variable resistors is noticeable in audio circuits as:

  • scratchy noise
  • lack of bass response
  • variable volume
  • too much treble response
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19. A color code of orange, orange, orange is for what ohmic value?

  • 22 kilohms
  • 3300 ohms
  • 44000 ohms
  • 33 kilohms
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20. A conductor's cross-sectional area in circular mils for onehalf.gif inch is:

  • 500 cmils
  • 100,000 cmils
  • 1,000,000 cmils
  • 500,000,000 cmils
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