WorksheetsElectricity and Its Effects
Total questions: 12
Worksheet time: 8mins
Electric current is said to pass through a wire when :
Only Proton pass through it.
Only Electron Pass through it.
No particle pass through it.
Both Electron na d neutron pass through it.
Consider The Following Statements And Choose The Incorrect One(S):
The electromagnet loses its magnetism for a moment and the armature is no longer attracted by it.
After getting magnetized the electromagnet attracts the iron armature towards itself.
When we press the switch, the electric circuit of the bell is completed and the current passes through the coil of the electromagnet and it gets magnetized.
None of the above
Electric Current Can Produce Effects
Heating effect
Magnetic effect
Chemical effect
All the above
The Filament Of An Electric Bulb Is Made Of A Thin Wire Of:
Copper
Aluminium
Nichrome
Tungsten
When Electric Current Is Passed Through The Filament Of A Bulb, It Gives Off:
Sound and heat
Heat and magnetism
Heat and light
Light
Due To This, The Filament Of Electric Bulb Gets Heated To A Very High Temperature And Starts Glowing:
Light
Magnetic field
Resistance
Nichrome wire
Which Of The Following Characteristic Is Not Suitable For A Fuse Wire?
Thin and short
Thick and short
Low melting point
Higher resistance than rest of wiring
Circuit Breaker Device Which Can Be Used In Place Of Fuse In Domestic Electric Wiring Is Called:
CBD
DCB
MCD
MCB
Choose The Combination Of Correct Answer From The Following:
Circuit is open and no current flows through it .
Current flows after sometime.
Circuit starting from positive terminal of the cell stops at the switch and circuit is open.
All are correct
Due To This, The Filament Of Electric Bulb Gets Heated To A Very High Temperature And Starts Glowing:
Light
Magnetic field
Resistance
Nichrome wire
Read The Following Sentences Carefully, And Choose The Incorrect One:
An electromagnet works on the magnetic effect of current.
Only iron is used for making electromagnets.
The magnetism of an electromagnet remains as long as the current is flowing in its coil.
The steel is also used for making electromagnets.
Shreya Is Writing Some Statements But She Confused To Know Whether The Statements Are Correct Or Not? If You Know The Answer To This Question, Then Tell Her:
Electromagnets are used in the construction of a large number of devices like electric bells, loudspeakers, electric motors etc.
The electromagnets which are used for loading and unloading heavy iron and steel objects are fitted on cranes.
Electromagnets are used by doctors to remove tiny iron particles from the eyes of a person (which may have fallen into the eyes accidentally).
All the above
