Last updated on December 14th, 2023 at 08:35 am
MCQ on Class 7 Science Electric Current and its effects
What is the flow of electrons through a conductor called?
A) Electric Circuit
B) Magnetic Effect
C) Electric Current
D) Heating Effect
Answer – (C)
Which of the following materials is commonly used for making electric fuses?
A) Copper
B) Silver
C) Aluminum
D) A material that melts quickly when large currents pass through it
Answer – (D)
Which electric component provides energy for the current to flow?
A) Switch
B) Bulb
C) Cell
D) Connecting wire
Answer – (C)
When an electric current passes through a wire, it heats up. What is this effect called?
A) Magnetic Effect
B) Heating Effect
C) Electromagnetism
D) Fuse Effect
Answer – (B)
What do we call a complete pathway of the flow of electric current?
A) Electric Circuit
B) Electric Conductor
C) Electric Insulator
D) Electric Switch
Answer – (A)
What is the purpose of an electric fuse?
A) To light up a bulb
B) To keep the circuit on or off
C) To conduct electric current
D) To prevent damage to the electric circuit
Answer – (D)
MCB stands for:
A) Magnetic Circuit Breaker
B) Miniature Cell Battery
C) Miniature Circuit Breaker
D) Magnetized Cell Bulb
Answer – (C)
When electric current passes through a wire, it behaves like:
A) A bulb
B) A switch
C) A magnet
D) An insulator
Answer – (C)