Class 7th Science MCQ Test | Electric Current and its Effect

MCQ Test | Class 7th Science | Electric Current and its Effect

Name: Class:

1. Which of the following is not an electric source?

A) cell

B) bulb

C) battery

D) none of these

2. What is the other name of the circuit diagram?

A) electric circuit

B) electric diagram

C) wiring diagram

D) none of these

3. What is the name given to the coils of wire that produce heat?

A) heating element

B) electromagnet

C) heater

D) none of these

4. Which of these is a safety device used in electric circuits?

A) electromagnet

B) electric fuse

C) electric buzzer

D) none of these

5. On a circuit diagram, the various components of the circuit are represented by :

A) standard pictures

B) lines

C) circles

D) standard symbols

6. An electric fuse is based on which of the following effect of current:

A) heating effect

B) chemical effect

C) magnetic effect

D) none of these

7. A solenoid carrying a current behaves like a:

A) bar magnet

B) horse - shoe magnet

C) piece of iron

D) electrical belt

8. Electromagnets are used in:

A) electric current

B) electric fan

C) electric motor

D) electric bell

9. Which of these flows from one atom to another?

A) electrons

B) protons

C) neutrons

D) none of these

10. In which of these situations, the electric current flows in a circuit?

A) switch is off

B) circuit is closed

C) circuit is open

D) none of these

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