MEDIUM
7th CBSE
IMPORTANT
Earn 100

An iron rod cannot be made an electromagnet if the coil is connected to an AC source.
(a)True
(b)False

33.33% studentsanswered this correctly

Important Questions on Electric Current and Its Effects
EASY
7th CBSE
IMPORTANT

MEDIUM
7th CBSE
IMPORTANT

EASY
7th CBSE
IMPORTANT
Electrical fuse is based on the magnetic effect of current.

MEDIUM
7th CBSE
IMPORTANT
Complete the word puzzle with the help of given clues.
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).
