Home
Class 12
PHYSICS
An alternating current is given by I =...

An alternating current is given by
`I = i_1 cos omegat + i_2 sin omegat`.
The rms current is given by

A

`(i_1 + i_2)/(sqrt2)`

B

`(|i_1 + i_2|)/(sqrt2)`

C

`sqrt((i_1^2 + i_2^2)/(2)`

D

`sqrt((i_1^2 + i_2^2)/(sqrt2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    HC VERMA|Exercise Objective 2|7 Videos

  • ALTERNATING CURRENT

    HC VERMA|Exercise Exercise|19 Videos

  • ALTERNATING CURRENT

    HC VERMA|Exercise Short answer|12 Videos

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Exercises|46 Videos

Similar Questions

Explore conceptually related problems

The displacement of a particle is given by r = A (cos omegat hati + sin omegat hatj ) . The motion of the particle

The equation for an alternating current is given by i=77 sin 314t. Find the peak value .

A wire carries an alternating current i=i_0sinomegat . In there an electric field in the vicinity of the wire?

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where I is

An alternating current having peak value 14 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

A constant current of 2.8 A exists in a resistor. The rms current is

The displacement of a particle along the x-axis is given by x = asin^2 omegat . The motion of the particle corresponds to

For a transistor in a common base configuration the alternating current gain is given by :

A resistance of 20 Omega is connected to a source of alternating current rated 110 V, 50 Hz . Find (a) the rms current, (b) the maximum instantaneous current in the resistor and (c) the time taken by the current to change from its maximum value to the rms value.

The instantaneous current from an AC source is given by I=5sin314t. What is the rms value of the current ?