Physics MCQs:

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"Happiness is not something ready made. It comes from your own actions."

― Mark Twain

Science-Physics-Multiple Choise Questions & Answers

প্রতিটি প্রশ্নের জন্য চারটি করে উত্তর থাকবে যার একটি সঠিক, বামদিকে A, B, C এবং D এর উপর ক্লিক করে সঠিক উত্তরটি দেখতে পারেন। যদি উত্তর সঠিক হয় তবে অপশনটির ডান দিকে টিক () আর উত্তর ভূল হলে ক্রস () চিনহ প্রদ্ররশিত হবে।

#: 81. What is emitter current in a transistor?

A.

It is equal to base current

B.

It is slightly less than collector current.

C.

It is slightly more than collector current.

D.

It is equal to collector current

#: 82. In a PNP transistor, the second letter N indicates ___________.

A.

The majority charge of the transistor.

B.

The polarity of the voltage.

C.

The negative charge of the transistor.

D.

The polarity of the base.

#: 83. A device which converts AC (Alternating Current) voltage to DC (Direct Current)voltage is called ___________.

A.

regulator

B.

oscillator

C.

rectifier

D.

transformer

#: 84. What does E.m.f stand for?

A.

Electronic motive force

B.

Electromedia force

C.

Electromegnatic force

D.

Electromotive force

#: 85. Which statement is correct for the equation of 'E1-IR1-E2-IR2 = 0'?

A.

Kirchhoff's fourth rule

B.

Kirchhoff's third rule

C.

Kirchhoff's second rule

D.

Kirchhoff's first rule

#: 86. Which instrument is used to measure potential difference between two points of any device?

A.

Phonometer

B.

Voltmeter

C.

Chronometer

D.

Barometer

#: 87. Current flowing from higher potential to lower potential is known as:

A.

protonic current

B.

electronic current

C.

electromotive current

D.

conventional current

#: 88. Fractional change in resistance per kelvin is called ______________.

A.

temperature coefficient

B.

resistance coefficient

C.

resistance constant

D.

temperature constant

#: 89. Which of the following printers uses electric charges?

A.

Inkjet printer

B.

Laser printer

C.

Desk jet printer

D.

All of above

#: 90. One micro farad of capacitance is equal to ________.

A.

10-2 F

B.

10-4 F

C.

10-6 F

D.

10-8 F

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