EASY
7th CBSE
IMPORTANT
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A (Cartridge/Switch) fuse is used in sensitive electric devices.

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Important Questions on Electricity and Its Effects

EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 7
The magnetic field in a straight conductor is always at the _____ (straight angle/right angle) to the direction of flow of current.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 8
A steel bar placed in a current-carrying coil changes into a _____ (permanent/temporary) magnet.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 1
Copper wire is coated with plastic to protect users from getting an electric shock
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 2
A rheostat is used in an electric circuit only to increase the current.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 3
An electric bell works because the current flows through its coil.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 4
A coil is carrying current changes soft iron into a permanent magnet.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 5
Nichrome is an alloy of lead and tin.
EASY
7th CBSE
IMPORTANT
SCIENCE Class 7>Chapter 13 - Electricity and Its Effects>LET'S Learn And EVALUATE>Q 6
Electromagnets are used to produce permanent magnets.