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
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72 questions
42. The word work means that:
- energy has been transferred
- it is inversely related to energy
- no energy has been transferred
- work and energy are not related
43. A good fuse will have:
- zero ohms resistance
- a medium resistance
- a high resistance
- an infinite resistance
44. What property does an incandescent lamp possess?
- cold resistance
- hot resistance
- ballast resistance
- both cold and hot resistance
45. One advantage of a carbon film resistor over a carbon composition resistor is:
- less circuit noise
- smaller size
- higher wattage
- poor tolerance
46. If a metallic conductor has a positive temperature coefficient of resistance, then:
- as temperature increases, resistance decreases
- as current increases, resistance decreases
- as voltage increases, current increases
- as temperature increases, resistance increases
47. If a calculator display was "0.00263," what would this answer be in percent?
- 0.026%
- 0.26%
- 2.63%
- 26.3%
48. A 33 komega.gif resistor with a 20% tolerance checks out as ok with which of the following ohmmeter readings?
- 26400 ohms
- 24183 ohms
- 6600 ohms
- 39970 ohms
49. After a lamp is turned on, its filament resistance will change to become:
- less resistive
- cooler
- brighter
- more resistive
50. Wirewound resistors are usually used in circuits that have:
- high current
- negative temperature coefficients
- low power
- high voltage