Question

A wire placed within a magnetic field has a current flowing in it as shown in the above figure. Identify the direction of the force exerted by the magnetic field on the wire.

• A. Point $A$
• B. Point $B$
• C. Point $C$
• D. Point $D$
• E. No forces are exerted on the wire

Answer 1

The correct option is C Point $C$

The direction of magnetic force in a current-carrying wire in a magnetic field can be obtained by Fleming's left-hand rule. if we apply Fleming's left-hand rule in this wire the direction of the force will be in the vertically downward direction perpendicular to the magnetic field and the direction of the current.

Here, the forefinger of the left hand is pointed towards the right. The middle finger is pointed along the direction of the current. So, the thumb, indicating the direction of force, is pointed towards the point $C$.