Home
Class 12
PHYSICS
The resistance of a coil for DC is 5Omeg...

The resistance of a coil for DC is `5Omega` . In case of AC, the resistance will

A

will remain `5Omega`

B

will decrease

C

will increase

D

will be zero

Text Solution

Verified by Experts

The correct Answer is:
C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - IB|14 Videos
  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - II|8 Videos
  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise PROBLEMS|28 Videos
  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

Similar Questions

Explore conceptually related problems

In a wheatstone bridge resistance of each of the four sides is 10Omega . If the resistance of the galvanometer is also 10Omega , then effective resistance of the bridge will be

The resistance of a heater coil is 110 Omega . A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11 Omega to a 220 V main line. The heater operates with a power of 110 W . The value of R in Omega is

Resistance of a Galvanometer coil is 8Omega and 2Omega Shunt resistance is connected with it. If main current is 1 A then the current flow through 2Omega resistance will be :

Assertion : Peak value of current in AC through a resistance of 10 Omega is 2 A . Then, power consumed by the resistance should be 20 W . Reason : Power in AC is P=I_("rms")^2R

The resistance of a moving coil galvanometer is 20Omega . It requires 0.01 A current for full - scale deflection. The value of resistance to convert it into a voltmeter of the range 20 V will be

If the resistance of a conductor is 5 Omega at 50^(@)C and 7Omega at 100^(@)C then the mean temperature coefficient of resistance of the material is

Calculate the resistance of two coils if their equivalent resistance in series and parallel are respectively 18 Omega and 4 Omega

The specification on a heater coil is 250 V, 500 W . Calculate the resistance of the coil. What will be the resistance of a coil of 1000W to operate at the same voltage?

The resistance of a coil used in a platinum-resistance thermometer at 0^(@)C is 3.00Omega and at 100^(@)C is 3.75Omega . Its resistance at an unknown temperature is measured as 3.15Omega . Calculate the unknown temperature.

The resistance of a conductor is 5Omega at 50^(@) C and 6Omega at 100^(@)C . The resistance at 0^(@)C is