Home
Class 12
PHYSICS
At an instant t, the magnetic flux linke...

At an instant t, the magnetic flux linked with a coil is, `phi=5t^(3)-100t+300Wb`. What will be the induced emf in the coil at time t = 2s?

Text Solution

Verified by Experts

40 V
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise PROBLEM SET - II|10 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER|7 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise SHORT ANSWER TYPE QUESTIONS - II|2 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

The magnetic flux linked with a coil is phi = (3t^2- 2t + 2) mwb. What emf is induced in the coil at t = 1 sec?—

At time t the magnetic flux is given by- phi = 5t^3- 100t + 300 . What will.be the induced emf after 3 sec?

Knowledge Check

  • The magnetic flux (phi) linked with a coil varies with time (t) as phi=at^(n) , where a and n are constants. The induced emf in the coil is e. Which of the following are correct?

    A
    if `0ltnlt1,e=0`
    B
    if `0ltnlt1,ene0` and |e| decreases with time
    C
    if n = 1, e is constant
    D
    if `ngt1,|e|` increases with time

  • The magnetic flux linked with a coil varies with time t as phi=at^(2)+bt+c , where a, b and c are constants. The emf induced in the coil will be zero at a time of

    A
    `(b)/(a)`
    B
    `-(b)/(a)`
    C
    `(b)/(2a)`
    D
    `-(b)/(2a)`

    • Similar Questions

    Explore conceptually related problems

    The flux at any time t is phi = 10t^2- 50t + 250 what will be the induced emf after 3seC?

    The magnetic flux linked with a coil satisfies the relation phi=4t^(2)+6t+9 Wb where t is the time in second. The e.m.f. induced in the coil at t =2 second is

    The magnetic flux (phi) (in Wb) linked with a 100 Omega coil changes with time t (in s) according to the relation phi=8t^(2)-2t+1 . What is the value of induced current (in A) in the coil at t = 2 s?

    The instantaneous magnetic flux phi in a, circuit is phi = 4t^2 - 4t + 1 . The total resistance of the circuit is 10Omega . At t = 1/2s , the induced current is—

    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

    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.

    Home
    Profile