MEDIUM
7th CBSE
IMPORTANT
Earn 100

An iron rod cannot be made an electromagnet if the coil is connected to an AC source.

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Important Questions on Electric Current and Its Effects

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 14 - Electric Current and Its Effects>Chapter Based Formative Assessment>Q 3
Greater the current in a copper wire, hotter it will be.
MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 14 - Electric Current and Its Effects>Chapter Based Formative Assessment>Q 4
Electromagnets can be used to remove iron splinters from body parts.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 14 - Electric Current and Its Effects>Chapter Based Formative Assessment>Q 5

Electrical fuse is based on the magnetic effect of current.

MEDIUM
7th CBSE
IMPORTANT
Science 7>Chapter 14 - Electric Current and Its Effects>Chapter Based Formative Assessment>PUZZLES AND QUIZ

Complete the word puzzle with the help of given clues.

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ACROSS
1. Circuit through which current flows (13).
2. Device used for lifting heavy loads (13).
3. U-shaped soft iron piece used in electric bell (8)
4. Material used to make electromagnet (8).
5. Filament of an electric lamp (8) DOWN
6. A combination of two or more cells (7).
7. A safety device in electrical circuits against high currents (4).
8. An electric appliance based on heating effect of current (6).