Question

A conducting bar moves along a circuit with aconstant velocity. A constant magnetic field isperpendicular to the bar and circuit. The barcovers 1.50 m2 of area in 1.00 second. AnEMF of 3.57 V is induced in the circuit. Whatis the strength of the magnetic field in Tesla?[?]T

Answer 1

Answer:

2.38 T

Explanations:

Area of the bar, A = 1.50m²

Time, t = 1.00 seconds

EMF, e = 3.57V

The magnetic field, B = ?

The magnetic flux, Φ = BA

Φ = 1.5B

According to Faraday's law:

e = -NΦt

Number of coils, N = `

Therefore:

3.57 = - 1 x (1.5B) x 1

3.57 = -1.5B

B = -3.57/1.5

B = -2.38 T

Therefore, the magnetic fied = 2.38 T

The negative sign shows that it is in a direction opposite to the reference direction