Question # 1

The symbol of AND operation is:

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+

-

.

*

In 1950, physicists observed that in cathode ray tube a special type of rays produced from cathode, these rays were called:

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Cathode rays

X-rays

Alpha rays

Gamma rays

When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:

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6 NC^-1

3 NC^-1

12 NC^-1

1.5 NC^-1

Which device is used to show the change in the value of current or electrical potential as a graph?

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Cathode ray tube

Electron gun

Oscilloscope

Transformer

To protect the gold leaves of electroscope from the external electric disturbances, the aluminum foil is grounded by a thin wire, which is made up of:

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Aluminum

Silver

Copper

Brass

If the distance between two point charges is reduced to half, the coulomb’s force become:

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Half

Two times

One fourth

Fourth times

SI unit of electric intensity is:

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Watt

NC^-1

NS^-1

Nm

Earth wire is connected to the:

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Power house

Transformer

Ground

Generator

Simplest electrical circuits use:

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One wire

Two wires

Four wires

Five wires

The output of an AND gate is only 1, when:

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Both of its inputs are zero

Anyone of the two inputs is zero

Both of its inputs are 1

Anyone of the two inputs is 1

The logical operation performed by this gate is:

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AND

NOR

NAND

OR

Which instrument is used to measure current, resistance and potential difference:

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Galvanometer

Digital meter

Voltmeter

Ammeter

The amount of current that causes the loss of muscle control is:

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0.1A

0.015A

2A

1A

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10th Class Physics Chapter 16 Introductory Electronics English Medium KPK Boards Online Mcqs MCQs With Answers

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