When is the force on a current-carrying wire in a magnetic field at its strongest?
-when the current is at a 0-degree angle to the field
-when the current is at a 30-degree angle to the field
-when the current is at a 45-degree angle to the field
-when the current is at a 90-degree angle to the field

The correct answer is 'when the current is at a 90-degree angle to the field'

Explanation:

The Force on a current carrying wire in a magnetic field is given by lorents Force:

B= Magnetic Field in Tesla

I = Current in a wire in Ampere

L= Length of the wire in meters

= angle between the Vetor B and vector I in degrees.

(force will be maximum)

(force will be minimum)