Question # 1

Each volt of lightening contains energy:

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4x10⁶ joules

1000 joules

1000 million joules

10 joules

Analogue quantity is:

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Time

Pressure

Distance

All of these

Those quantities whose values do not remain constant are called:

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physical quantities

Digital quantites

Log quantities

Analog quantities

The value of K in SI unit is:

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9X10²⁰ Nm²C²

8X10⁹Nm²C²

9X10⁹Nm²C²

10X10^-9 Nm²C^-2

The amount of current that can be painful is:

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0.005A

0.001A

1A

2A

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

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

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Galvanometer

Digital meter

Voltmeter

Ammeter

1 Pico farad is equal to:

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10^-9F

10¹²F

10^-12F

10^-6F

Capacitors are used to store:

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Current

Voltage

Charge

Resistance

The converter of analogue to digital signal is:

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ADC

DAC

ATDC

None of these

For the emission of electrons from the tungsten filament the values of current and voltage are taken as:

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0.1 A and 2V

0.2 A and 4V

0.3A and 6V

0.4A and 8V

What does a switch do:

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Oppose the current

Open and close the circuit

Store energy

Provide voltage

Value of ‘k’ depends upon:

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System of unit

Nature of medium

Both a and b

None of these

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