Question # 1

An expression for gain of an inverting amplifier is

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(R₁R₂)

None of these

Photodiode is used for:

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Detection of current

Detection of heat

Detection of light

Both a & b

Base of transistor is of order:

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10^-11m

10⁶m

10^-8m

10^-6m

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance

The device which is used as amplifier and works with the negative feedback is.

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Operational amplifier

P-n-p transistor

n-p-n transistor

Transistor

Reverse current flows due to

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Majority charge carriers

Minority charge carriers

Electrons

Holes

Rectification is the process of converting.

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D.C. into A.C.

A.C. in to D.C.

Low signal to high

High signal to low

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Physics ICS Part 2 Chapter 18 Online MCQ's Test MCQs With Answers

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