Electric Current and Ohm's Law Questions and Answers
Electric Current and Ohm’s Law questions with answers are among the most common electronics aptitude questions in GATE, SSC JE, and RRB JE exams. This topic explains the fundamental relationship between voltage, current, and resistance — the backbone of electrical circuit analysis. Understanding Ohm’s Law and its applications helps solve both theoretical and numerical questions efficiently. Here, you’ll find well-explained problems covering resistivity, conductance, and real-world circuit examples to improve your technical proficiency.
Electric Current and Ohm's Law
Showing 10 of
25 questions
21. Which law states that current through a conductor is directly proportional to voltage across it?
- A) Faraday's Law
- B) Lenz's Law
- C) Ohm's Law
- D) Coulomb's Law
23. The power dissipated in a resistor of 4 Ω carrying 3 A current is
- A) 9 W
- B) 12 W
- C) 36 W
- D) 48 W
24. If the voltage is doubled and resistance remains same, current will
- A) Halve
- B) Double
- C) Remain same
- D) Be zero
25. The resistance of a wire of length doubled and area halved will be
- A) Doubled
- B) Quadrupled
- C) Halved
- D) Unchanged