⇦ | ⇨ |
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: - Masses of 3 wires of same metal are in the ratio 1:2:3 and their lengths
- The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is
- The amount of heat energy required to raise the temperature of 1 g of Helium
- A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
- Two small spherical shells A and B are given positive charges of 9C and 4C
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Masses of 3 wires of same metal are in the ratio 1:2:3 and their lengths
- The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is
- The amount of heat energy required to raise the temperature of 1 g of Helium
- A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
- Two small spherical shells A and B are given positive charges of 9C and 4C
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