Question

dentify in which of the following three cases, will the electromagnet have a greater

number of paper clips attached to it, A or B. Justify your choice with proper reasons

Case 1

Nail A — 50 turns,

Nail B — 100 turns


Case 2

Coil around Nail A — attached

to single cell,

Coil around Nail B — attached

to two cells


Case 3

A — Pencil as the core,

B — Iron nail as the core

​

Answer 1

Explanation:

In case 1

Nail B have higher electromagnetic power because the number of turns is directly proportional to the electromagnetic force. Is that when we increase e the numbers of turns the electromagnetic force also increases.

In case 2

Coil around Nail B because the electromagnetic force is greater as we increase potential difference and flow current.

In case 3

B has a higher electromagnetic force because the pencil is an insulator which does not show any magnetic property as it does not conduct electricity.

Answer 2

S1ap part in 51 and 112 part to be a party attract on selfie selfie sketch 3 pencil and 1 iron force extract