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

If the number of turns become double but length remain same, then magnetic field in the solenoid become.

• Half A
• Double B
• Remain same C
• Zero D

When Ohm meter gives full scale deflection it indicates.

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

A charged particle enters in a strong magnetic field its K.E.

• Remain constant A
• Increases B
• Decreases C
• Increases then decreases D

The sensitivity of Galvanometer can be increased by:

• Increasing C/BAN factor A
• Decreasing C/BAN factor B
• Increasing angle θ C
• All of above D

Galvanometer is sensitive when C/BAN is

• zero A
• Large B
• small C
• Negative D

When charge particle enter perpendicular to magnetic field, the path followed by it is:

• A helix A
• A circle B
• Straight line C
• Ellipes D

Brightness of screen of CRO controlled by

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

The magnetic field  inside solenoid is given:

• μ_∘nI² A
• μ_∘nI B
• μ_∘n/1² C
• μ_∘I/n D

NIBA =

• cθ A
• θ/c B
• c²θ C
• c²/θ D

Two parallel wires carrying currents in the opposite direction.

• Repel each other A
• Attract each other B
• Have no effect upon each other C
• They cancel out their individual magnetic fields. D

In CRO, the output waveform of time base generator is

• Circular A
• Square B
• Sinusoidal C
• Saw-toothed D

The vector sum of electric force and magnetic force is called:

• Deflecting force A
• Lorentz force B
• Newton force C
• Faraday's force D

A soft iron cylinder is placed  inside coil galvanometer to:

• Make field circular and strong A
• Make field radial and weak B
• Make field radial and strong C
• All of above 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
• 
  B
• 
  C
• None of the above D

The SI unit of magnetic induction 'B' Tesla is equal to.

• NA-1m-1 A
• Nam-1 B
• NA-1 m C
• Na2m-1 D

Useful device to measure resistance, current and voltage is an electronic instrument called.

• Volt meter A
• Ammeter B
• Ohmmeter C
• Digital Multimeter D