You’ve reached the end of your free Videos limit.
#14 | Mutual Induction
(Physics) > Electromagnetic Induction
Unable to watch the video, please try another server
Related Practice Questions :

A small square loop of wire of side l is placed inside a large square of wire of side L (L>>l). The loops are co-planar and their centres coincide. The mutual inductance of the system is proportional to :

1. l/L

2. ${\mathrm{l}}^{2}/\mathrm{L}$

3. L/l

4. ${\mathrm{L}}^{2}/\mathrm{l}$

High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two coils have a mutual inductance of 5 mH. Current changes in the first coil according to the equation I = ${I}_{0}$cos wt, where ${I}_{0}$ = 10 A and  rad/s. Maximum value of e.m.f. induced in the second coil is

1.  5$\pi$ volt

2.   2$\pi$ volt

3.  4$\pi$ volt

4.  $\pi$ volt

High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two coils of self inductance L1 and L2 are placed closer to each other so that total flux in one coil is completely linked with other. If M is mutual inductance between them, then

(1) M = L1 L2

(2) M = L1/L2

(3) $M=\sqrt{{L}_{1}{L}_{2}}$

(4) M = (L1 L2)2

High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be

(1) 120 V

(2) 80 V

(3) 200 V

(4) 300 V

High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A loss free transformer has 500 turns on its primary winding and 2500 in secondary. The meters of the secondary indicate 200 volts at 8 amperes under these conditions. The voltage and current in the primary is

(1) 100 V, 16 A

(2) 40 V, 40 A

(3) 160 V, 10 A

(4) 80 V, 20 A