HARD
Earn 100

Name the equation giving the heating effect of electric current?

Important Questions on Electricity

EASY

If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the _____ terminal of the battery.

MEDIUM
When an electric current is passed through a coil wrapped around an iron nail, the iron nail behaves like a _____. (switch/magnet)
MEDIUM
The core of an electromagnet is made from _____.
(Choose from the following: soft iron/ aluminium)
EASY
An_____behaves like a magnet when an electric current passes through it. 
MEDIUM
The fuse wire is made of an alloy of tin and _____(copper/ tungsten).
EASY
The safety device based on the heating effect of electric current is called _____ (fuse/switch).
EASY
When a current is switched ‘on’ in a room heater, it _____.
(Choose one of the following: produces heat/ produces wind).
MEDIUM
An electromagnet is made by winding a wire around a _____ (soft iron/plastic) rod.
EASY
A current-carrying coil of an insulated wire wrapped around a piece of iron is called _____.
EASY
Heating coil in an electric heater is made from _____(nichrome/tungsten).
EASY
An electric fuse acts on the _____ (magnetic/heating) effect of the electric current.
MEDIUM
A cylindrical current-carrying coil that acts like a magnet is called a _____.
EASY
The magnet made by using electric current is called an _____.
EASY
The passage of electric current through a conducting solution causes the _____ (thermal/chemical) effect of current. 
EASY

The fuse is made from the material that has _____ (low/ high) melting point.

EASY
An electric current flowing through a wire produces _____ (heating/cooling) effect.
EASY
A magnet produced by passing an electric current through a coil of insulating wire wound around a soft iron is called _____.
(Permanent magnet/ electromagnet)
EASY
Fuse is made up of a metal which has _____ melting point.
EASY
When current is switched ‘on’ in a room heater, its element becomes _____.
MEDIUM

A fuse is made up of a wire which has a _____ melting point.