The forces on a current-carrying wire in a magnetic field are at their strongest when the current is at a 90-degree angle to the field. Option D is correct.
<h3>What is a magnetic field?</h3>
It is the type of field where the magnetic force is obtained. The magnetic force is obtained by the field felt around a moving electric charge.
The complete question is;
"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 magnetic force is found as;
F=BILSINΘ
Where,
Magnetic Field, B
Length of the wire, L
The angle between field and current, Θ
When Θ=90°
The value of the magnetic force is;
F=BIL
When the current is flowing at a 90-degree angle to the magnetic field, the forces acting on a wire carrying a current are the strongest.
Hence, option D is correct.
To learn more about the magnetic field, refer to the link;
brainly.com/question/19542022
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