| ⇦ | 
| ⇨ |
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: - A body with mass 5 kg is acted upon a force F=(-3i+4j) N.If its initial velocity at
- If a spring of spring constant k stretched by a length x under tension T, the energy
- A bullet of mass m moving with velocity v strikes a block of mass M at rests
- The polarising angle of glass is 57⁰. A ray of light which is incident at this angle
- A charge Q is uniformly distributed over a large plastic plate. The electric field
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body with mass 5 kg is acted upon a force F=(-3i+4j) N.If its initial velocity at
- If a spring of spring constant k stretched by a length x under tension T, the energy
- A bullet of mass m moving with velocity v strikes a block of mass M at rests
- The polarising angle of glass is 57⁰. A ray of light which is incident at this angle
- A charge Q is uniformly distributed over a large plastic plate. The electric field
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