I. Direction: Read each items carefully. Choose the letter of the correct answer.

1. In what year electromagnet was invented?
A. 1972
B. 1825
C. 1995
D. 2000

2. Who invented the electromagnet?
A. William Sturgeon
B.Albert Einstein
C.Isaac Newton
D.Charles Darwin

3. He works on the principle of magnetic effect of electric current?
A. Albert Einstein
B.Isaac Newton
C. William Sturgeon
D. Charles Darwin

4. It is a device in which a magnetic field is produced by electric current?
A. Electromagnet
B. Magnetic force
C. Magnet
D.Magnetic field

5. It is possible to increase the strength of an electromagnet?
A. Yes
B.No
C.Maybe
D. None of these​