Question # 1

an additional wire used along with live and neutral wire is:

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cable wire

earth wire

grip wire

hot wire

an ideal voltmeter is that which draws:

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small current

no current

high current

none of these

The half life of Lead Pb is

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10 hour

10.10 hours

10.6 hours

1 year

The half life of argon nuclide Ar-40 is:

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2 x 10⁸years

2 .2x 10⁸years

2.4x 10⁸years

2.8x 10⁸years

When we double the voltage in a simple electric circuit, we double the:

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Current

Power

Resistance

Both a and b

Release of energy by the sun is due to

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Nuclear fission

Nuclear fusion

Burning of gases

Chemical reaction

the resistance of an ammeter should be:

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high

very high

low

constant

What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:

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4.8W

14.5W

30W

60W

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2 Ω

4 Ω

8 Ω

12 Ω

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

How Galvanometer is connected in circuit to detect current:

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In series

In parallel

Fixed

Variable

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

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Physics 10th Class English Medium Unit 9 Online Test MCQs With Answers

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