Second Year Physics Chapter 14 Online MCQ Test for 2nd Year Physics Chapter 14 Electromagnetism Preparation

When Ohm meter gives full scale deflection it indicates.

• Zero resistance A
• Infinite resistance B
• Small resistance C
• Very High resistance D

A voltmeter is always connected in

• Parallel A
• Series B
• Perpendicular C
• Straight line D

Cathode ray oscilloscope works by deflecting a beams

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

A moving charge is surrounded by:

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

The unit of magnetic induction is:

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

The SI unit of E is NC-1 and that of B is Na-1 m-1 then the unit of E/B is.

• ms-2 A
• ms B
• ms^-1 C
• m-1s-1 D

A Current flowing towards the reader is denoted by.

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

The anodes in cathode ray oscilloscope.

• Control number of waves A
• Control brightness of sept formed B
• Accelerate as well as focus beam C
• Negative potential w.r.t to chithode D

NIBA =

• cθ A
• θ/c B
• c²θ C
• c²/θ 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

Lorentz force means the force acting on a particle, which is

• Magnetic force only A
• Electric force only B
• Sum of electric and magnetic force C
• None of these 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

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

A device used for detection of current is called.

• Inductor A
• Voltmeter B
• Capacitor C
• Galvanometer D

If a charge is at rest in a magnetic field then force on charge is

• Zero A
• Double B
• One fourth C
• Four times D

Brightness of screen of CRO controlled by

• Grid A
• Filament B
• Anode C
• Cathode D

If current flowing through a solenoid becomes four times, then magnetic field inside becomes.

• two times A
• three times B
• four times C
• Half D