Question

A 2.60-m length of wire is held in an east–west direction and moves horizontally to the north with a speed of 0.360 m/s. The Earth's magnetic field in this region is of magnitude 50.0 µT and is directed northward and 53.0° below the horizontal. (a) Calculate the magnitude of the induced emf between the ends of the wire.

Answer 1

Answer:

37.4 V

Explanation:

Given:

Length of the wire, l = 2.60m

Velocity of the wire, v = 0.360m/s

Magnetic Field, B = 50.0 µT

Angle θ = 53.0°

The expression for the magnitude of induced emf for a wire is given as;

                                   ε = Blv sinθ                    -------------(1)

Where;

ε is the induced emf

l is the length of the wire

v is the velocity of the wire

θ is the angle between the magnetic field and the normal of the loop

Substituting the values of l = 2.60m,  v = 0.360m/s, B = 50.0 µT and θ = 53.0° into equation (1)

                               ε = 50 × 2.60 × 0.360 × sin 53.0°

                               ε = 50 × 2.60 × 0.360 × 0.7986

                               ε = 37.376 V

                               ε = 37.4 V

The magnitude of the induced emf between the ends of the wire is 37.4 V