The correct answer is: C. Direction of motion of the conductor if forefinger points in the direction of generated e.m.f.
Fleming’s right-hand rule is a rule used to determine the direction of the induced current in a conductor. The rule states that if the forefinger of the right hand is placed in the direction of the magnetic field, the thumb points in the direction of the motion of the conductor, and the middle finger points in the direction of the induced current, then the induced current will flow in the direction of the middle finger.
In the case of the question, the forefinger is pointing in the direction of the generated e.m.f., so the thumb will point in the direction of the motion of the conductor. The middle finger will then point in the direction of the induced current.
Here is a diagram that illustrates Fleming’s right-hand rule:
[Diagram of Fleming’s right-hand rule]
The forefinger points in the direction of the magnetic field. The thumb points in the direction of the motion of the conductor. The middle finger points in the direction of the induced current.
The other options are incorrect because:
- Option A is incorrect because the thumb does not point in the direction of the induced e.m.f.
- Option B is incorrect because the thumb does not point in the direction of the flux.
- Option D is incorrect because the forefinger does not point in the direction of the lines of flux.