An electric generator actually act as a
Source of electric charge
Source of heat energy
Electromagnet
Converter of energy
choose the wrong statement
Magnetic poles exist in pairs
Magnetic poles have equal strength
like poles repel each other
Unlike poles repel each other
The safety device to protect an electric circuit from overloading or short circuiting is
Earthing
Electric fuse
Magnetic induction
Electrolysis
Electromagnets are used in
Electric bells
Telephone
Dynamo
All of these
The wire having black plastic covering is a
Live wire
Neutral wire
Earth wire
None
The potential difference between live wire and neutral wire in India is
110 V
50 V
220 V
Carbon brushes are used in
Electric motor
Bar magnet
Commonly used safety fuse wire in made of
Copper
Pb
Ni
An alloy of tin & lead
Which of the following domestic appliance uses an electric motor?
Electric fan
Milk cooker
Pressure cooker
Cooking gas
The wire having red plastic covering is
neutral wire