Question 279: Electromagnetic Induction

Question

The magnet is moved towards the coil with speed '$$\mathrm{V}$$'. The induced e.m.f. in the coil is '$$\mathrm{e}$$'. The magnet and the coil move away from one another each moving with speed '$$\mathrm{V}$$'. The induced e.m.f. in the coil is

Accepted Answer

The equation for the induced emf is:
$$\mathrm{e}=\mathrm{B} / \mathrm{V}$$
Relative velocity between the coil and the magnet is:
$$\mathrm{v}_{\mathrm{r}}=2 \mathrm{v}$$
$$	herefore \quad$$ The new induced emf in the coil is:
$$\mathrm{e}_{	ext {new }}=\mathrm{B} l \cdot 2 \mathrm{~V}=2 \mathrm{e}$$

Answer

$$\mathrm{e}$$

Answer

$$2 \mathrm{e}$$

Answer

$$\frac{\mathrm{e}}{2}$$

Answer

$$4 \mathrm{e}$$

Electromagnetic Induction

The magnet is moved towards the coil with speed '$\mathrm{V}'. The induced e.m.f. in the coil is '\mathrm{e}'. The magnet and the coil move away from one another each moving with speed '\mathrm{V}$'. The induced e.m.f. in the coil is

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