He magnetic flux through a loop of wire decreases from 1.7 wb to 0.3 wb in a time of 0.4 s. what was the average value of the induced emf, in units of volts?

Induced emf through a loop of wire is 3.5 V.

Explanation:

It is given that,

Initial magnetic flux,

Final magnetic flux,

The magnetic flux through a loop of wire decreases in a time of 0.4 s, t = 0.4 s

We need to find the average value of the induced emf. It is equivalent to the rate of change of magnetic flux i.e.

So, the value of the induced emf through a loop of wire is 3.5 V.

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explanation: