Home
Class 12
PHYSICS
The current passing through a choke coil...

The current passing through a choke coil of 5H is decreasing at the rate of 2A/s. The e.m.f. developed across the coil is?

Answer

Step by step text solution for The current passing through a choke coil of 5H is decreasing at the rate of 2A/s. The e.m.f. developed across the coil is? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 12 exams.

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise PROBLEM SET - I|19 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise PROBLEM SET - II|10 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise SHORT ANSWER TYPE QUESTIONS - I|15 Videos
  • ELECTRIC POTENTIAL

    CHHAYA PUBLICATION|Exercise CBSE Scanner|13 Videos
  • ELECTROMAGNETIC WAVES

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|17 Videos

Similar Questions

Explore conceptually related problems

Two differenct coils have self-inductances L_(1)=16 mH and L_(2)=12mH . At a certain instant, the current in the two coils is increasing at the same rate and power supplied to the two coils is the same. Find the ratio of induced current

Two differenct coils have self-inductances L_(1)=16 mH and L_(2)=12mH . At a certain instant, the current in the two coils is increasing at the same rate and power supplied to the two coils is the same. Find the ratio of induced voltage

Knowledge Check

  • Current (i) passing through a coil varies with time t as i=2t^(2) . At 1 s total flux passing through the coil is 10 Wb. Then

    A
    self-inductance of the coil is 10 H
    B
    self-inductance of the coil is 5 H
    C
    induced emf across the coil at 1 s is 20 V
    D
    induced emf across the coil at 1 s is 10 V
  • Similar Questions

    Explore conceptually related problems

    The current I through a closed coil of self-inductance 0.25 H is related with time t as I=4t-t^(2) . Then the emf e induced in the coil will vary with time in the manner shown in the justify.

    Two differenct coils have self-inductances L_(1)=16 mH and L_(2)=12mH . At a certain instant, the current in the two coils is increasing at the same rate and power supplied to the two coils is the same. Find the ratio of energy stored in the two coils at that instant.

    Statement I: The charge passing through a coil in time Deltat is (Deltaphi)/(R ) , where R is the resistance of the coil and Deltaphi is the change in flux linked with the coil in time Deltat . Statement II: The induced emf in a conductor eprop(dphi)/(dt), where (dphi)/(dt) is the time rate of change of flux linked with teh conductor.

    The radii of two concentric circular coils are 8 cm and 10 cm and the number of turns in them are 40 and 10, respectively. A 5A current is passing through each of them In the direction. Determine the magnetic field produced at the centre of the two coils.

    An emf of 100V is induced in a coil when the current through it changes at the rate of 50A.s^(-1) . Determine the self-inductance of the coil.

    At any instant current i through a coil of self inductance 2 mH is given by i=t^(2)e^(-t) . The induced e.m.f. will be zero at time

    The magnets of two suspended coil galvanometers are of the same strength so that they produce identical magnetic fields in the region of the coils. The coil of the first one is in the shape of a square of side a and that of the second one is circular of radius a// sqrt(pi) . when the same current is passed through the coils, the ratio of the torque experinced by the first coil to the experinced by the second one is