Suppose the first coil of wire illustrated in the simulation is wound around the iron core 7 times. Suppose the second coil is wound around the core N2 = 13 times. Shortly after the switch has been closed, the flux through the second coil of wire changes from 2.1 Wb per turn to 2.7 Wb in each turn of wire over a time interval of 0.3 s. Find the magnitude of the emf induced in the coil.

Emf induced in the coli will be equal to 26 volt

Explanation:

We have given number of turns N = 13

It is given that magnetic flux changes from 2.1 Weber to 2.7 Weber in 0.3 sec

Change in flux

Change in time dt = 0.3 sec

We have to find the induced emf

Induced emf is equal to

So emf induced in the coil will be equal to 6 volt

Explanation:

Given:

no. of turns in the first coil,

no. of turns in the second coil,

the change in flux through the secondary coil,

time taken for the change in flux,

This emf is mathematically given as:

(we take no. of turns of the second coil because the rate of change in flux is associated with the second coil)

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