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17 questions
Cell is a device which
converts chemical energy into electrical energy
electrical energy into light energy
electrical energy into magnetic energy
None of these
A bulb has
two terminals and one filament
two terminals and two filaments
multiple terminals and single filament
single terminal and single filament
Filament of a bulb is made up of
aluminium
chromium
platinum
tungsten
Bulb glows only in
closed circuit
open circuit
in both circuits
open circuit if bulb is not fused
A battery is
a single cell
combination of cells in which cells are joined (+) to (-)
combination of cells in which cells are joined (+) to (+)
None of these
A substance which allows electricity to pass through it is called
a conductor
an insulator
semiconductor
superconductor
Which is an example of an insulator
bakelite
aluminium
tap water
All of these
An example of a conductor is
tap water
salt solution
metal wire
all of these
How many terminals are there in a dry cell?
One
Two
Three
Four
To prevent electric shocks, the metallic electrical wires are covered with
paper
cotton
aluminium
plastic
An electrical cell has two terminals, a positive and a ……………
Materials through which current can pass are called ………………….
Materials through which current cannot pass are called …………………….
When a switch is off, the circuit becomes ………………..
We use …………….. to test the conductivity of a material
A switch either breaks or …………. a circuit.
Electricity we use in our homes is supplied from a ………………..
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