| ⇦ | 
| ⇨ |
The electric current in AC circuit is given by the relation i-3 sinωt+4 cosωt. The rms value of the current in the circuit in ampere is
Options
(a) 5/√2
(b) 5√2
(c) √2/5
(d) 1/√2
Correct Answer:
5/√2
Explanation:
The current through the AC circuit is given by
i = 3 sin ωt + 4 cos ωt
The maximum value of current is
I(max) = √(3² + 4v) = √25 = 5 unit
The rms value of current, I(rms) = I(max) / √2 = (5 / √2) unit
Related Questions: - In an interference experiment, third bright fringe is obtained at a point
- The electron drift speed is small and the change of the electron is also small
- In a nuclear reactor, the number of U²³⁵ nuclei undergoing fissions per second
- A 220 volts input is supplied to a transformer. The output circuit draws
- For a satellite moving in an orbit around the earth, the ratio of kinetic
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In an interference experiment, third bright fringe is obtained at a point
- The electron drift speed is small and the change of the electron is also small
- In a nuclear reactor, the number of U²³⁵ nuclei undergoing fissions per second
- A 220 volts input is supplied to a transformer. The output circuit draws
- For a satellite moving in an orbit around the earth, the ratio of kinetic
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply