Question # 1

When a potential of 10 volt is applied across a conductor, a current of 5 miliampere flows through it, the resistance of the conductor will be:

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200 ohm

2000 ohm

0.2 ohm

0.002 ohm

The reason carbon dating work is that.

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Plants and animals are such strong emitters of carbon 14

After a plant or animal dies, it stops in fresh carbon

There is so much non radioactive carbon dioxide in the air

When a plant or animal dies.

Nuclear fission was first observed in

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1936

1937

1938

1939

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

the range of galvanometer to measure current is:

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few amperes

few micro amperes

few milli amperes

mega amperes

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?

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92 protons

91 protons

93 protons

89 protons

The symbol of atomic mass number is:

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A

X

N

Z

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

According to ohm’s law V= :

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I²R

IR²

IR

I/R

What is the amount of current passing through an electric heater, if it takes 1800C charge pass through it in 3 minute:

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16 A

10 A

100 A

0.1 A

by connecting suitable high resistance in series with galvanometer it will convert into:

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voltmeter

galvanometer

ammeter

multimeter

the resistance of an ammeter should be:

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high

very high

low

constant

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