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Grade 10 Science

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1.
2 points
Which of the following is a force like gravity and the strong and weak forces inside the nucleus of an atom?
2.
2 points
Which of the following converts electrical energy into mechanical energy?
3.
2 points
It is the energy associated with electric current.
4.
2 points
Which part reverses the flow of current through an electric motor?
5.
2 points
Which energy of an object due to its movement or position?
6.
2 points
Which of the following Scientist began to experiment with magnets and current -carrying wires at the Royal Institute of London in 1831?
7.
2 points
Who published the results of his work in 1832?
8.
2 points
All of the following is the physicists who worked individually, EXCEPT____.
9.
2 points
Which of the following French physicist who extended the worked of Oersted?
10.
2 points
Which of the following device converts mechanical energy into electrical energy?
11.
4 points
A magnet has two magnetic poles (north and south) and is surrounded by a magnetic field.
12.
4 points
The Earth has a magnetic field that resembles a giant bar magnet.
13.
4 points
A current is induced in a wire in moving or changing magnetic field.
14.
4 points
A generator converts electrical energy into mechanical energy.
15.
4 points
A transformer decreases or increases the voltage of an alternating current.
16.
4 points
An electric current in a wire produces a magnetic field around the wire.
17.
4 points
Alternating current is a DC.
18.
4 points
DC means alternating current.
19.
4 points
Like poles attract unlike poles magnet repel.
20.
4 points
Like poles attract unlike poles magnet repel.
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