HARD
7th CBSE
IMPORTANT
Earn 100

Look at the circuit diagram. (The bulbs are shown as glowing.) Is the circuit drawn correctly? Explain your answer. Correct the diagram where necessary.

Question Image

Important Questions on Electric Current and Its Effects

HARD
7th CBSE
IMPORTANT

Draw the symbols for the following components of electric circuits.

 A circuit is set up such that the light bulb glows. If the terminals of the electric cell are reversed, will the bulb continue to glow? Explain your answer.

HARD
7th CBSE
IMPORTANT
What is an electric heating element?
HARD
7th CBSE
IMPORTANT
Give four examples of appliances that contain heating elements?
HARD
7th CBSE
IMPORTANT
Are wires of the same material and thickness used in an electric circuit and an electric heating element? Explain your answer.
HARD
7th CBSE
IMPORTANT
Explain what causes short circuits and overloads in circuits.
HARD
7th CBSE
IMPORTANT
Why are short circuits and overloads dangerous?
HARD
7th CBSE
IMPORTANT
How does a miniature circuit breaker help to protect a circuit?
HARD
7th CBSE
IMPORTANT
Draw simple diagrams to show two different ways in which two cells can be connected to make a battery.