The magnetic flux linked with a coil is ...

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?—

A

`4V`

B

`4 xx 10^-3V`

C

`6V`

D

`6 xx 10^-3V`

Text Solution

Verified by Experts

Topper's Solved these Questions

MODEL PAPER SET-07
UNITED BOOK HOUSE|Exercise EXERCISE|47 Videos
MODEL PAPER SET-09
UNITED BOOK HOUSE|Exercise EXERCISE|40 Videos

Similar Questions

Explore conceptually related problems

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 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

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?

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—

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

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

The magnetic flux across a loop of resistance 10Omega is given by phi = 5t^2 -4t +1 induced in the loop after 0.2 sec ?

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?

A current flowing through a coil changes from +2A to -2A in 0.05 s and an emf of 8 V is induced in the coil. The value of self-inductance of the coil is

UNITED BOOK HOUSE-MODEL PAPER SET-08-EXERCISE

A proton enters a magnetic field vecB with velocity vecV in a directio...
Text Solution
|
At a certain place the horizontal component of earth’s magnetic field ...
Text Solution
|
The magnetic flux linked with a coil is phi = (3t^2- 2t + 2) mwb. What...
Text Solution
|
In an ac circuit voltage V = 100 sin(100t) V and current I = 100 sin(1...
Text Solution
|
Dimension of mu0in0are—
Text Solution
|
The refractive index of the material of a double equiconvex lens id 1....
Text Solution
|
The refractive angle of prism is A. A ray is incident normally on one ...
Text Solution
|
The amount of energy released in the fisson of "92U^235 is—
Text Solution
|
The magnitude of saturated photoelectric current depends upon —
Text Solution
|
For a transistor used in common emitter configuration, alpha = 0.9. Wh...
Text Solution
|
As radio waves of low frequencies cannot be transmitted to long distan...
Text Solution
|
An electron is moving along X axis and a magnetic field is directed al...
Text Solution
|
Two infinitely long conductors are placed at a separation r and each c...
Text Solution
|
When an aeroplane flies horizontantally, a potential difference is dev...
Text Solution
|
Which one of blue and red light will be deviated more by a prism and w...
Text Solution
|
What is polarisation of light?
Text Solution
|
Write down the symbol and truth table OR gate.
Text Solution
|
What is forbidden energy gap?
Text Solution
|
When a shunt S is connected across gaivanomenter of resistence G, 1/n...
Text Solution
|
Why is potentiometer preferred to voltmeter for the measurement of emf...
Text Solution
|