Uncategorized

A copper coil is connected to a galvanometer. What would happen if a bar magnet is (i) pushed into the coil with its north pole entering first (ii) held at rest inside the coil (iii) pulled out again?

By User
On

If a bar magnet is
(i) pushed into the coil with its north pole entering first then a sudden deflection is observed in the galvanometer. This deflection indicates that a sudden current is produced in the coil.The direction of current in the coil is anticlockwise.

(ii) When the magnet is held at rest inside the coil, there is no deflection in the galvanometer. It indicates that no current is produced in the coil.

(iii) When the magnet is pulled out again, a deflection in the negative direction is observed. It indicates that the current produced in the coil is in the opposite direction.

Related Posts:

  1. In copper pyrites CuFeSx , what is the value of x ?
  2. Why do the poles experience about six months day and six months night?
  3. How would Maya's life be different in South Africa today?
  4. Give two definitions of mutual inductance and write its unit.
  5. Why is repulsion a surer test of magnetism than attraction ? Describe one application of the attractive property of magnets.
  6. A company was manufacturing 'LED bulbs' which were in great demand. It was found that the target of producing 300 bulbs a day was not met by the employees. On analysis, it was found that the workers were not at fault. Due to electricity failure and shortage of workers, the company was not able to achieve the set targets and alternative arrangements were needed. To meet the increased demand, the company assessed that approximately 88 additional workers were required out of which 8 would work as heads of different departments and 10 would work as subordinates under each head. The required qualifications and job specifications were also enlisted. It was also decided that necessary relaxation should be given to encourage women, persons from backward and rural areas and persons with special abilities to assume responsible positions in the organisation. All efforts were made to match the ability of the applicants with the nature of work. (a) Identify the functions of management…