| ⇦ | 
| ⇨ |
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: - The length of second pendulum is 1 m on earth. If mass and diameter
- “On flowing current in a conducting wire the magnetic field is produced around it”.
- A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- A body undergoes no change in volume. Poisson’s ratio is
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The length of second pendulum is 1 m on earth. If mass and diameter
- “On flowing current in a conducting wire the magnetic field is produced around it”.
- A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- A body undergoes no change in volume. Poisson’s ratio is
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