Question 168: Electromagnetic Induction

Question

A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m/s towards East. The horizontal component of the Earth's magnetic field at that place is 4 $$	imes$$ 10
$$-$$3
T and the angle of dip is 45$$^\circ$$. The emf induced in the rod is ___________ mV.

Accepted Answer

$$E = Blv$$
$$ = 4 	imes {10^{ - 3}} 	imes {{20} \over {100}} 	imes 20$$ Volts
$$ = 16$$ mV

Electromagnetic Induction

A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m/s towards East. The horizontal component of the Earth's magnetic field at that place is 4 $\times 10 -3 T and the angle of dip is 45^\circ$. The emf induced in the rod is ___________ mV.

Integer / Numeric Answer Type