Question

A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to :
A. hold the sheet there if it is magnetic.
B. hold the sheet there if it is non-magnetic.
C. move the sheet away from the pole with uniform velocity if it is conducting.
D. move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar.
Choose the correct statement(s) from the options given below :

• A. B and D only
• B. A and C only
• C. A, C and D only
• D. C only

Answer 1

Answer: (B)

A and C only

Answer 2

- A magnetic sheet requires a force to hold it in place.
- A conducting sheet develops eddy currents, causing motion when the field changes.