ElectroMagnetic InductionMedium

Question

A square wire loop of 10.0 cm side lies at right angles to a uniform magnetic field of 20T. A 10V light bulb is in a series with the loop as shown in the figure. The magnetic field is decreasing steadily to zero over a time interval ᐃT. The bulb will shine with full brightness if ᐃt is equal to
                                                 

Options

A.20 ms
B.0.02 ms
C.2 ms
D.0.2 ms

Solution

e =
10 = (10 × 10-2)2 ⇒ ᐃ t = 20 ms

Create a free account to view solution

View Solution Free
Topic: ElectroMagnetic Induction·Practice all ElectroMagnetic Induction questions

More ElectroMagnetic Induction Questions

A square loop of side 22 cm is changed to a circle in time 0.4 s. The magnetic field present is 0.2 T. The emf induced i...A simple electric motor has an armature resistance of 1Ω and runs from a dc source of 12 volt. When running unloade...An a.c. of 50 Hz and 1 A peak value flows in the primary coil of a transformer. The mutual inductance between primary an...Self inductance of solenoid is : -...Consider the situation shown in the figure. The wire AB is slide over two parallel rails with a constant velocity. If th...