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17 Electricity 2021N

Authored by Lee Peng TUNG

Physics

10th Grade

17 Electricity 2021N
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33 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

In which circuit is the ammeter measuring the flow of charge through the lamp?

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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In circuit 1, a negative charge flows in a clockwise direction. The bulb is bright.

In circuit 2, the battery is reversed as shown. The bulb is equally bright.

Which charge flows in circuit 2 and in which direction?

negative, anticlockwise

negative, clockwise

positive, anticlockwise

positive, clockwise

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows a circuit containing two resistors of resistance 1.0 Ω and 2.0 Ω.

A voltmeter is connected across the 1.0 Ω resistor by connecting P to X. The reading on the voltmeter is 6.0 V.

P is moved to point Y in the circuit.

What is the new reading on the voltmeter?

3.0 V

6.0 V

12 V

18 V

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

Which circuit contains a fuse?

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which row correctly shows the numbers of cells, lamps, and switches in the circuit?

1 | 1 | 4

1 | 4 | 1

3 | 1 | 4

3 | 4 | 1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The metal cases of electrical appliances are connected to an earth wire. Which statement is not correct?

The live wire may become loose and touch the metal case.

If the metal case becomes live, the earth wire conducts current to the ground.

The earth wire needs to have a high resistance.

Earthing metal cases helps prevent a person from receiving an electric shock.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A teacher asks, 'Why do we put a fuse in a mains circuit?'

Student 1 says, "it protects the wiring from overheating."

Student 2 says, "it protects us from getting a shock if we touch the live wire."

Who is correct?

both students

neither student

student 1 only

student 2 only

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