Question

to use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your
a) forefinger in the direction of the lines of force.
b) thumb in the direction of the

Explanation:

This question is about the left - hand rule (Fleming's Left - Hand Rule) in physics, which is used to determine the direction of induced voltage (or current) in a conductor moving in a magnetic field. In Fleming's Left - Hand Rule, the forefinger points in the direction of the magnetic field lines (lines of force). Option A correctly describes the use of the forefinger in this rule. Option B's description is incomplete and does not match the correct application of the left - hand rule for determining the direction of voltage in a moving conductor in a magnetic field.

Answer:

A) forefinger in the direction of the lines of force.