EASY
7th CBSE
IMPORTANT
Earn 100

Name the effect of an electric current used in each of the following devices or situations:

Moving trains

Important Questions on Electric Current and its Effects

EASY
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 2
What are the ways to change the strength of an electromagnet?
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 3
In what ways, a solenoid is different from an electromagnet?  
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 4

Compare the given diagrams. Write any 2 similarities and 2 dissimilarities between the given diagrams.

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EASY
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 5
Write any two necessary conditions for an electric current to flow in the circuit.
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 1
Explain the working of an electric bell with help of a diagram.
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 2
Where is the earth wire connected in an electrical appliance? How does earth wire prevent electric shocks? 
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 3
Draw a well-labelled diagram of a closed electric circuit.
MEDIUM
7th CBSE
IMPORTANT
WOW! SCIENCE Hands-on Learning in SCIENCE 7>Chapter 3 - Electric Current and its Effects>EVALUATE>Q 4

How does an electric current flow in a closed circuit? Explain.