A straight wire with a length of j = 0.8 m is located perpendicular to the induction lines of a uniform magnetic

A straight wire with a length of j = 0.8 m is located perpendicular to the induction lines of a uniform magnetic field B. Determine the modulus of induction B of the magnetic field if, at a current I = 15A, a force F = 2.4H acts on the wire

Given:

l = 0.8 m;

α = 90 °;

I = 15 A;

F = 2.4 N.

Find:

B -?

Solution.

Using the formula for calculating the Ampere force, we determine the value of the field induction.

F = B * I * l * sin α;

2.4 = B * 15 * 0.8 * sin 90 °;

2.4 = B * 15 * 0.8 * 1;

2.4 = B * 12;

B = 2.4: 12;

B = 0.2 T.

Answer: the modulus of induction B of the magnetic field is 0.2 T.