| ⇦ | 
| ⇨ |
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 a photoelectric effect experiment, the slope of the graph between the stopping
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- The ratio of magnetic dipole moment of an electron of charge e and mass m
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a photoelectric effect experiment, the slope of the graph between the stopping
- If the minimum energy of photons needed to produce photoelectrons is 3 eV,
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- The ratio of magnetic dipole moment of an electron of charge e and mass m
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