Kavita wants to teach the students about working of electromagnets. She tells the students about the steps to make an electromagnet which are as follows
1. Place some pins near iron nail.
2. Flow electricity and watch what happens.
3. Wind the iron nail with copper wire.
4. Join the wire end with the terminals (+ and -) of the cell.
Which of the following sequence is correct to get the desired result by the students?

Options

A. 1, 2, 3, 4
B. 3, 4, 1, 2
C. 3, 1,2,4
D. 4, 3, 1, 2

Answer

B

Explanation

The correct steps for making electromagnet is 3, 4, 1 and 2.