| ⇦ | 
| ⇨ |
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 machine gun fires 10 bullets/s,each of mass 10 g,the speed of each bullet
- Electrons in the atom are held to the nucleus by
- A soap bubble is charged to a potential 12V. If its radius is doubled,
- If α (current gain) of transistor is 0.98, then what is the value of β
- The total energy of an electron in the first excited state of hydrogen atom
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A machine gun fires 10 bullets/s,each of mass 10 g,the speed of each bullet
- Electrons in the atom are held to the nucleus by
- A soap bubble is charged to a potential 12V. If its radius is doubled,
- If α (current gain) of transistor is 0.98, then what is the value of β
- The total energy of an electron in the first excited state of hydrogen atom
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