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Magnetism and electricity | unit 1 - lesson 4
Magnetism and electricity | unit 1 - lesson 4
نسخ
تكرار
1
A structure made of a copper wire twisted around a wrought iron bar and the wire is connected to a battery.
Electromagnetic
Winch
Dynamo
Ammeter
2
A device used to detect the magnetic effect of the electric current.
Ammeter
Electromagnetic
Winch
Dynamo
3
It converts the mechanical (kinetic) energy into electric energy.
Electromagnetic
Winch
Ammeter
Dynamo
4
A huge instrument contains electromagnet and is used to lift scrap cars.
Electromagnetic
Winch
Ammeter
Dynamo
5
Dynamo changes the.........
electric energy into mechanical energy.
Kinetic energy into electric energy.
kinetic energy into magnetic energy.
electric energy into magnetic energy.
6
The huge electric generator is used to..........
generate heat.
generate electricity used for operating factories.
generate magnetic energy.
No Answer.
7
The coil of a dynamo is made up of........ Wire
Iron
Copper
Sulphur
Carbon
8
........... discovers that "by moving a magnet in a coil, electric energy is generated".
Faraday
Mosely
El-Hassan Ibn El-Haitham
Newton
9
........... consists of a copper coil and a magnet.
Magnetic needle
Dynamo
Electromagnet
Horse-shoe magnet
10
Electromagnet changes the.........
kinetic energy into magnetic energy.
electric energy into magnetic energy.
Magnetic energy into electric energy.
electric energy into mechanical energy.
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