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Physics 914 MCQs [All-Courses]

Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

Two parallel wires carrying currents in the opposite directions____________________?

A repel each other

B attract each other

C have no effect upon each other

D they cancel out their individual magnetic fields

Review Detailed Answer

Correct Answer: repel each other

What is the value of the current in a wire of 10cm long at the right angle to a uniform magnetic field of 0.5 Weber/m2 when the force acting on the wire is 5N ?

A 1A

B 10A

C 100A

D 1000A

Review Detailed Answer

Correct Answer: 100A

Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?

A magnetic flux

B magnetic field intensity

C magnetic induction

D self inductance

Review Detailed Answer

Correct Answer: magnetic induction

The net charge on n-type material is____________________?

A Positive

B Negative

C Both positive and negative

D Neutral

Review Detailed Answer

Correct Answer: Neutral

In a semiconductors the charge carriers are ___________________?

A Holes only

B Electrons only

C Electron and holes both

D All of the above

Review Detailed Answer

Correct Answer: Electron and holes both

Holes can exist in____________________?

A Conductors

B Insulators

C Semi conductors

D All of the above

Review Detailed Answer

Correct Answer: Semi conductors

Many of the semi conductors are crystals of the type__________________?

A Face centred cubic

B Body centred cubic

C Simple cubic

D All of the above

Review Detailed Answer

Correct Answer: Face centred cubic

The electrons in conduction band are free to___________________?

A Transport vibrations

B Transport signals

C Transport charge

D Transport impulses

Review Detailed Answer

Correct Answer: Transport charge

A vacant or partially filled band is called _____________________?

A Conduction band

B Valence band

C Forbidden band

D Empty band

Review Detailed Answer

Correct Answer: Conduction band

In simple cube one atom or molecule lies at its______________________?

A Force corners

B Nine corners

C Eight corners

D Six corners

Review Detailed Answer

Correct Answer: Eight corners

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Physics 914 MCQs [All-Courses]

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All Topics 914

Two parallel wires carrying currents in the opposite directions____________________?

What is the value of the current in a wire of 10cm long at the right angle to a uniform magnetic field of 0.5 Weber/m2 when the force acting on the wire is 5N ?

Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?

The net charge on n-type material is____________________?

In a semiconductors the charge carriers are ___________________?

Holes can exist in____________________?

Many of the semi conductors are crystals of the type__________________?

The electrons in conduction band are free to___________________?

A vacant or partially filled band is called _____________________?

In simple cube one atom or molecule lies at its______________________?