A wire 1 m long carrying a current of 12 A is at right angles to a magnetic field of 0.2 T.What is the magnitude of the force on the wire?

Ampere’s Force

F =I•L•B•sinα = ...
(sinα =sin90º =1)

2.4

To find the magnitude of the force on the wire, you can use the formula for the magnetic force on a current-carrying wire:

F = BIL

Where:
F is the force on the wire,
B is the magnetic field strength,
I is the current in the wire, and
L is the length of the wire.

In this case, you are given:
B = 0.2 T (Tesla) - the magnetic field strength,
I = 12 A (Ampere) - the current in the wire, and
L = 1 m (meter) - the length of the wire.

Substituting these values into the formula, you can calculate the magnitude of the force on the wire:

F = (0.2 T) * (12 A) * (1 m)
F = 2.4 N (Newton)

Therefore, the magnitude of the force on the wire is 2.4 Newtons.