WorksheetsElectricity class 8
Total questions: 20
Worksheet time: 10mins
Name a device used to detect presence of charge and nature of charge on an object
Battery
Fuse
Electoscope
Transformer
Moving charges constitute
Electrode
Electric current
Static electricity
Magnetism
The SI unit of electric current is
Coulomb
Ampere
Volt
Ohm
Good conductors have many loosely bound
Molecules
atoms
protons
electrons
When a glass rod is rubbed with a silk cloth the charge on glass rod will be
Positive
Negative
Neutral
No charge
SI unit of electric charge is
ampere
volt
coulomb
joule
How can it be explained that someone's hair can stick to a balloon?
There is static electricity
There is too much dust in the air
A parallel circuit was too long
The person needs to wash his hair
Galvanometer is used to
detect electric current
negative terminal to positive terminal
positive terminal to negative terminal
the flow rate of electric charges through a conductor
The colour code for a live wire is
Black or blue
Green or yellow
Red or brown
White or black
The top thick pin of a plug is always connected to the
Live wire
Neutral wire
Earth wire
Fuse wire
Full form of MCB is
Miniature charge breaker
Miniature coloumb breaker
Miniature circus breaker
Miniature circuit breaker
Which is not a way to charge an uncharged body
Friction
Convection
Conduction
Induction
A small device to open or close a circuit
Switch
Socket
Plug
Fuse
The wire which carries the current away from appliances to the mains and completes the circuit
Live wire
Neutral wire
Earth wire
Fuse wire
An electric meter records the consumption of electric energy directly in
Joules
Watt
Kilowatt hours
Watt hour
Electric hazard due to loose connection or damaged wiring when live and neutral wires sometimes touch each other
Overloading
Electric shock
Short circuit
Load shedding
