SSE JE Electrical Engineering 29 Oct 2020 Shift 2 Papers

Question : 144 of 200

Marks: +1, -0

A wire of length 50 cm moves at right angles to its length at 50 m/s in a uniform magnetic field of density 1T. Find the EMF induced in the conductor when the direction of motion is inclined at 30° to the direction of the field.

25 V
6.75 V
12.5 V
50 V

Validate

Solution:

Given L = 50 cm = 0.5 m, B = 1 T, v = 50 m/s, and θ = 30°
The emf induced when the conductor moves at an angle of 30° to the direction of the field will be:
EMF = (1) (0.5) (50) sin 30°
EMF=

100×1/2

EMF = 12.5 V

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