SaraNextGen.Com

A small coil  with  turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in the figure. The area of the coil is  , the length of the right arm of the balance beam is  cm . When there is no current in the coil the balance is in equilibrium. On passing a current  mAthrough the coil, equilibrium is restored by putting an additional weight of mass  mg on the balance pan. Find the magnetic induction field (in terms of  T) between the poles of the electromagnet, assuming it to be uniform



Question ID - 153955 | SaraNextGen Top Answer

A small coil  with  turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in the figure. The area of the coil is  , the length of the right arm of the balance beam is  cm . When there is no current in the coil the balance is in equilibrium. On passing a current  mAthrough the coil, equilibrium is restored by putting an additional weight of mass  mg on the balance pan. Find the magnetic induction field (in terms of  T) between the poles of the electromagnet, assuming it to be uniform

1 Answer
127 votes
Answer Key / Explanation : (4) -

(4)

Magnetic torque

Gravitational torque

For equilibrium

 T

127 votes


127