| ⇦ | 
| ⇨ |
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 circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- Temperature is a measurement of coldness or hotness of an object.
- A circular disc rolls down an inclined plane.The ratio of rotational kinetic energy
- The young’s modulus of steel is twice that of brass. Two wires of same length
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- Temperature is a measurement of coldness or hotness of an object.
- A circular disc rolls down an inclined plane.The ratio of rotational kinetic energy
- The young’s modulus of steel is twice that of brass. Two wires of same length
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
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