Home
Class 12
PHYSICS
A current of 300muA deflects the coil of...

A current of `300muA` deflects the coil of a moving coil galvanometer through `60^@`. What should be the current to cause rotation through `pi//5rad`? Determine the sensivity of this galvanometer.

Text Solution

Verified by Experts

Here, `I_1=300muA`, `theta_1=60^@`, `theta_2=pi/5rad=(180^@)/(5)=36^@`, `I_2=?`
As `I=(k)/(nBA)theta` or `Iproptheta` `[:'(k)/(nBA)=a const ant`]
so `I_2/I_1=theta_2/theta_1` or `I_2=theta_2/theta_1=I_1=36/60xx300=180muA`
Current sensitivity, `I_s=theta_2/I_2=(36^@)/(180muA)=0*2^@//muA`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Conceptual Problems (d)|2 Videos

  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Very Short Answer Questions (a)|2 Videos

  • ELECTROSTATICS

    PRADEEP|Exercise ASSERTION-REASON TYPE QUESTIONS|2 Videos

  • OPTICS

    PRADEEP|Exercise Multiple choice questions|1 Videos

Similar Questions

Explore conceptually related problems

A current of 500muA deflects the coil of a moving coil galvanometer through 60^@ . What should be the current to cause the rotation through pi//5 radian? What is the sensitivity of galvanometer?

A current of 300muA deflects a coil of a moving coil galvanometer through 30^@ . What should be the current to cause the rotation through pi//5 radius? What is the current sensitivity of the galvanometer ? If resistance of galvanometer is 50Omega , find its voltage sensitivity.

The deflection in a moving coil galvanometer is

A current of 400 mu A can deflect the coil of galvanometer by 40. Calculate the amount of current required to rotate the coil through 60. Also find the current sensitivity of the galvanometer.

The current sensitivity of a moving coil galvanometer can be increased by

The current sensitivity of a moving coil galvanometer can be increased by

The current sensitivity of a moving coil galvanometer can be increased by