Question

A conductor of length 'l' is moving perpendicular to magnetic field 'B' with a speed 'v'. The motional emf is given by -

• A. Blv
• B. Bv2l
• C. \frac{B}{v}
• D. \frac{Bl}{v}

Hint:

Motional emf is directly proportional to the magnetic field, the length of the conductor, and the speed of motion.

Answer 1

The Correct Option is A

The motional emf (electromotive force) induced in a conductor moving perpendicular to a magnetic field is given by the formula \( \text{emf} = B \cdot l \cdot v \), where \( B \) is the magnetic field strength, \( l \) is the length of the conductor, and \( v \) is the velocity at which the conductor is moving.