Resistance and Power Questions and Answers
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
51. How is power dissipated in a resistor?
- by resistance
- by voltage
- by current
- by heat
52. Resistance in a circuit is:
- opposition to current
- opposition to voltage
- the same as current
- the same as voltage
54. One ampere of current flowing through one ohm of resistance is equal to:
- 1 horsepower
- 1 Btu
- 1 watt
- 1 joule
55. Good insulators:
- have few electrons in their outer shells
- have a large dielectric strength
- have a small breakdown voltage
- have many electrons in the nucleus
56. A 12-volt battery is delivering 3 amperes to a resistor. The power dissipated by the resistor is 4 watts.
- TRUE
- FALSE
59. Carbon composition resistors are the most common and the least expensive type of fixed-value resistor.
- TRUE
- FALSE
60. In a resistive circuit, if the voltage increases, the current will increase.
- TRUE
- FALSE