EASY
7th CBSE
IMPORTANT
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An electric toaster works on the heating effect of electric current.

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Important Questions on Electric Current and its Effects

EASY
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Let's Answer>Q 4
An electric fuse wire is made of a material of very high melting point.
EASY
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Let's Answer>Q 5
An electromagnet retains its magnetic effect even when the electric current in it is switched off.
EASY
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q A
Which of these is a basic component of an electric circuit?
MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q A
Which of the following appliances function because of the heating effect of current?
MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q A
Which of the following acts as a safety device to prevent a large amount of electric current from flowing through a circuit?
MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q A
Which of the following is not a component of an electromagnet?
EASY
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q C

Give reason for the following:

It is important to have standard methods of drawing circuit diagrams.

EASY
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q C

Give reason for the following:

Sometimes filaments in an electric bulb get fused.