3. a rectangular coil of wire (a = 21.0 cm, b = 45.0 cm) containing a single turn is placed in a uniform 7.80 t magnetic field, as the drawing shows. the current in the loop is 18.0 a. determine the magnitude of the magnetic force on the right side of the loop.

F = 29.484 N

Explanation:

The force on the rod can containing the current placed in external magnetic field is:

F = BIL

where,

B = magnitude of the field

I = current in the loop

L = length

then,

F = 7.80 * 18.0 * 0.21

F = 29.484 N

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c) up is the direction the magnetic force is acting on the charge.