| ⇦ | 
| ⇨ |
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: - Four identical rods are joined to from a square. If the temperature difference
- When there is no heat change from surroundings in a system, then the process
- Two closed pipes produce 10 beats per second when emitting their fundamental nodes.
- If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is
- A heavy nucleus at rest breaks into two fragments which fly off with velocities
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Four identical rods are joined to from a square. If the temperature difference
- When there is no heat change from surroundings in a system, then the process
- Two closed pipes produce 10 beats per second when emitting their fundamental nodes.
- If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is
- A heavy nucleus at rest breaks into two fragments which fly off with velocities
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