Electronics Mcqs

Our collections of Multiple choice questions and answers focuses on study of Electronics in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Electronics in Physics comprehensively.

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Acceptor and donor impurities donate

N-carriers only

P-carriers only

P-carriers and n-carriers respectively

N-carriers and p-carriers respectively

An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a _

Non-inverting voltage at output

Reference voltage on the other

Virtual input


Depletion region of a junction is formed

During the manufacturing process

Under forward bias

Under reverse bias

When temperature varies

Electrons present in p-type material due to thermal pair generation are

Majority carriers

Minority carriers

Dual carriers


Forward current through a semi conductor diode circuit is due to

Minority carriers

Majority carriers



Identify the correct statement about minority carriers

Holes in n-type and free electrons in p-type

Holes in n-type and p-type

Free electrons in n-type and holes in p-type

Free electrons in n-type and p-type

In a half-wave rectifier the r.m.s. value of the A.C. component of the wave is

Equal to D.C. value

More than D.C. value

Less than D.C. value


In full wave rectification the output D.C. voltage across the load is obtained for

The positive half cycle of input A.C.

The negative half cycle of input A.C.

The complete cycle of input A.C.

All of the above.

In half-wave rectification the output D.C. voltages is obtained across the load for

The negative half cycle of A.C.

The positive half cycle of A.C.

The positive and negative half cycles

Either positive or negative half of A.C.

In p-n-p transistor the collector current is

Equal to emitter current

Slightly less than emitter current

Greater than emitter current

Any of above

In the transistor schematic symbol, the arrow

Is located on the emitter

Is located on the base

Is locate on the collector

Points form north to south

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