MEDIUM
7th CBSE
IMPORTANT
Earn 100

What type of electric fuse is used in individual electrical appliances? Explain with the help of a labelled diagram. 

Important Questions on Electric Current and Its Effects

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? 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 47
Explain why, filament-type electric bulbs are not power efficient. Name any two types of electric lighting devices which are much more energy efficient than filament-type bulbs.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 48
Can you use an electromagnet for separating plastic bags from a garbage heap? Give reason for your answer. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 49
State two important uses of electromagnets. 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Short Answer Type Questions>Q 50
Why do we use iron for making an electromagnet and not steel? 
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Long Answer Type Questions>Q 51
What is an electromagnet? Explain in your own words, how to make an electromagnet. Draw a labelled diagram to show the circuit of the electromagnet.
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 14 - Electric Current and Its Effects>Long Answer Type Questions>Q 52
Mention two advantages of an electromagnet over a permanent magnet. What type of magnet is used in an electric bell? Draw a labelled diagram of an electric bell?