Question

Q.no 8. In a magnetic circuit, MMF is
A : Directly proportional to voltage applied
B: Inversely proportional to the voltage applied
C: Directly proportional to the product of current in conductor and turns of the coil
D: Directly proportional to the ratio of current in conductor and turns of the coil​

Answer 1

Answer:

d

Explanation:

d

Answer 2

In a magnetic circuit, MMF is directly proportional to the product of the current in the conductor and turn of the coil.

• The MMF i.e. magnetomotive force is similar to the electromotive force.
• It has the units of ampere-turns.
• The MMF is responsible for setting up the magnetic flux in the magnetic circuit.
• The magnetomotive force is the magnetic pressure that is responsible for the magnetic flux in the circuit.
• It is responsible in certain substances for the origin of magnetic fields.