MEDIUM
7th CBSE
IMPORTANT
Earn 100

In an electric bell, explain the function of a switch.

Important Questions on Electric Current and its Effects

MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q D
In an electric bell, explain the function of an electromagnet.  
MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q D

In an electric bell, explain the function of a soft-iron strip.       

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

In an electric bell, explain the function of Hammer and gong.   

MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Exercises>Q D
How will you show that a current carrying wire produces a magnetic field?
MEDIUM
7th CBSE
IMPORTANT
Science Horizons>Chapter 13 - Electric Current and its Effects>Think and Answer>Q 1
Instead of a soft-iron core, if we wind a current carrying wire around a wooden pencil, would it still deflect a magnetic compass needle?