Electric Current and its Effects Sample Questions for Class 7
Question 1
Heating effect of electric current is used in ?
A. Electric motor
B. Electric fuse
C. Electric bell
D. Electromagnet
Question 2
Which device works on magnetic effect of electric current?
A. Electric fan
B. Electric bulb
C. Electric bell
D. Electric mixer
Question 3
Which of the following elements can form closed electric circuit?
A. Battery, bulb , switch
B. Switch, conducting wire, bulb
C. Battery ,conducting wire , bulb
D. Switch,conducting wire , bulb
Question 4
Which component can be used to close or open the circuit?
A. Electrical wires
B. Cells
C. Switches
D. Bulb
Question 5
Which of the following can be a part of electrical circuit?
A. An eraser
B. A steel spoon
C. A wooden stick
D. A plastic rod