Question # 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

SI unit of electric intensity is:

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Watt

NC^-1

NS^-1

Nm

Give the number of factors which affect the ability of a capacitor to store charge.

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2

3

4

5

Public address system is the example of :

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Analogue electronics

Digital electonics

Binary system

None of these

Electroscope is used for detecting:

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Current

Charge

Voltage

Resistance

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

The output of OR gate would be '0' When:

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Both of its inputs are zero

One of its two inputs is zero

Both of its inputs ar 1

Any one of its inputs is 1

What does a switch do:

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Oppose the current

Open and close the circuit

Store energy

Provide voltage

Positive charge in an electric field always tend to move:

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Does not move

From lower to higher potential

From higher to lower potential

All of these

Electronics is the study of principles by means of which we control the:

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Flow of electrons.

Nuclear fission

Fusion reaction

Radiations

The amount of current that can be painful is:

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0.005A

0.001A

1A

2A

AND gate can be formed by using two:

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NOT gates

OR gates

NOR gates

Nand gates

The open switch Boolean expression is represented by:

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0

1

10

2

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

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