MEDIUM
7th CBSE
IMPORTANT
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What are conductors? How are they useful in an electric circuit?

Important Questions on Electric Current and Its Effects

MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
What is meant by an open circuit? Why does electric current not pass in this case?
EASY
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
Why does a nichrome wire gets heated in an electric circuit whereas nichrome does? 
HARD
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
What material is used to make the fuse wire? Can you use any metallic wire as a fuse wire? Give reasons.
MEDIUM
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q B
What are the causes of fire in electric circuits?
EASY
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C
The strength of the magnetic field of a current-carrying coil depends on the number of turns in the coil. 
EASY
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C
Fuse wire has a low electric resistance.
EASY
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C
Fuse wire melts when the circuit is overloaded.
EASY
7th CBSE
IMPORTANT
Start Up Science 7>Chapter 13 - Electric Current and Its Effects>EXERCISES FOR FORMATIVE AND SUMMATIVE ASSESSMENT>Q C
Electromagnets are used to make permanent magnets.