Question

An increase in magnetic flux through a coil of 100 turns in 0.1 s is 0.001 Wb. The maximum induced EMF generated in the coil is

• A. 1 V
• B. 10 V
• C. 0.1 V
• D. 100 V

Answer 1

The Correct Option is A

According to Faraday's Law of Induction, the induced electromotive force (EMF) in a coil is given by: $$\text{EMF} = -N \frac{\Delta \Phi}{\Delta t}$$ 

Where:  $N$ is the number of turns in the coil  $\Delta \Phi$ is the change in magnetic flux  $\Delta t$ is the change in time In this case: $N = 100$  $\Delta \Phi = 0.001 \text{ Wb}$ $\Delta t = 0.1 \text{ s}$ 

Plugging in the values, we get: $$\text{EMF} = -100 \times \frac{0.001 \text{ Wb}}{0.1 \text{ s}} = -100 \times 0.01 \text{ V} = -1 \text{ V}$$ 

The magnitude of the induced EMF is 1 V.