EASY
7th CBSE
IMPORTANT
Earn 100

Name five appliances (or devices) in which electric cells are used. 

Important Questions on Electric Current and Its Effects

EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 39
Give two applications of the heating effect of electric current. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 40
When does an electric short circuit occur? 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 41
Explain the importance of using fuse in a household electric circuit. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 42
When does the overloading of a household electric circuit occur?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 43
Explain why, any metal wire or metal strip cannot be used in place of fuse wire.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 44
What type of electric fuse is used in individual electrical appliances? Explain with the help of a labelled diagram. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 45
An electrician working in your home wants to replace a blown up fuse wire by a piece of copper wire. Would you agree? Give reason for your response. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 46
What might happen if a fuse is not inserted in household electric wiring?