A varying magnetic flux linking a coil is given by \(\Phi =\frac{1}{3 – McqOptions

MCQOPTIONS

1.	A varying magnetic flux linking a coil is given by \(\Phi =\frac{1}{3}λ t^3\). If at time t = 3 , the emf induced is 9 V, then the value of λ is
A.	Zero
B.	1 Wb/s2
C.	-1 Wb/s2
D.	9 Wb/s2
Answer» D. 9 Wb/s2

Discussion

No Comment Found

Related MCQs

A varying magnetic flux linking a coil is given by \(\Phi =\frac{1}{3}λ t^3\). If at time t = 3 , the emf induced is 9 V, then the value of λ is
Electric generator is a device which converts _______ energy into_______ energy.
A coil of wire having 5 turns has an inductance L. What will be the inductance of the similar coil having 20 turns?
Flux Linkages equals
A circular loop of area 0.015 m2 is placed in a uniform magnetic field of 0.30 T. If its plane makes an angle of 37° with field, then the magnetic flux through the loop is
A circuit possesses an inductance of 1 H when a current through coil is changing uniformly at the rate of 1 A/s inducing an opposing emf of 'X' volts in it.What is the value of 'X'?
_____________ law states that, the polarity of induced 'emf' (electromotive force) is such that it tends to produce a current which opposes the change in magnetic flux that produced it.
A rod of length l is rotated about an axis perpendicular to its length and passing through the end with an angular velocity ω. A magnetic field of induction B is acting perpendicular to the plane of rotation. Find the e.m.f induced across the rod.
In which of the following an electric motor is not used
The law that the induced e.m.f. and current always oppose the cause producing them is due to