2nd Year Physics Chapter 14 Online MCQ Test for 12th Class Physics Chapter 14 (Electromagnetism)

The unit of magnetic induction is:

• Tesla  A
• Weber B
• Weber metre C
• NAm^-1 D

A Current flowing towards the reader is denoted by.

• Cross A
• a bracket B
• A dot C
• Positive sign D

• 
  A
• 
  B
• 
  C
• None of the above D

Cathode ray oscilloscope works by deflecting a beams

• Neutrons A
• Protons B
• Electrons C
• Positron D

Grid in cathode ray oscilloscope controls.

• Number of electron A
• Temperature of filament B
• Frequency of electron C
• Energy of electrons D

The force on a charge particle moving parallel to magnetic field is:

• Maximum A
• Minimum B
• Zero C
• None of these D

Magnetism is related to:

• Stationary charges A
• Moving charges B
• Stationary & Movingcharges C
• Law of motion D

___ is correct relation.

• IT = 10^-4 G A
• IT = 10⁴ G B
• IT = 10² G C
• IT = 10 ^-2 G D

The function of three anodes a C.R.O is

• To accelerate electrons only A
• To focus the electrons only B
• To control the brightness of spot on screen C
• To accelerate and focus the electrons D

The Grid 'G' in cathode ray oscilloscope.

• Accelerate as well as focus electron beam A
• Control no. of electrons beam B
• Is at - Ve potential with respect to cathode. C
• Both d and b  D

An ammeter is an electrical instrument which is used to measure.

• Voltage A
• Current B
• Resistance C
• None D

In order to increase sensitivity of galvanometer the value of C may be

• Increase A
• Decrease B
• Neither increase nor decrease C
• Remain same D

The field is strong and uniform.

• Inside the solenoid A
• Surrounding of solenoid externally B
• Perpendicular to solenoid C
• All of above D

Write the SI unit of magnetic flux.

• Tesla A
• Weber B
• Weber m-2 C
• Tesla m2 D

The dimensions of magnetic flux are

• M¹L^-2T¹A¹ A
• MLT^-2A^-1 B
• ML²T²A^-1 C
• ML²T^-2A^-1 D

Current passing through the coil of galvanometer

• CO/BAN A
• CoN /BA B
• NAB/CO C
• AN/BCO D

A moving charge is surrounded by:

• 2 Fields A
• 3 Fields B
• 4 Fields C
• None of these D