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

e/m=

• v/Br A
• Br/V B
• VB/r C
• Vr/B D

Magnetic flux density at a point due to current carrying coil is determined by

• Ampere's law A
• Faraday's law B
• Lenz's law C
• Gauss's law D

An electron enters the magnetic field at right angle from left, B is into paper. The electron will be deflected.

• upward A
• To ward right B
• Down ward C
• Toward left D

For  accurate measurement of current through a circuit, the resistance of ammeter should be

• Very small A
• Very high B
• Neither small nor high C
• None of the above D

An AVO meter can also be called as.

• Digital multimeter A
• Digital voltmeter B
• Digital ammeter C
• Digital ohm meter D

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

The permeability of free space is measured in

• wb A/m A
• Am/wb B
• wb/Am C
• m/wbA D

The SI unit of magnetic induction Tesla is equal to

• N-1 Am A
• NA m2 B
• NA-1n2 C
• NA-1m-1 D

Grid in cathode ray oscilloscope controls.

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

The field is strong and uniform.

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

Magnetic induction can be measured in units of.

• Tesla A
• Gauss B
• Weber/m2 C
• All of the above D

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

When a charge is projected perpendicular to a uniform magnetic field, tis path is

• Spiral A
• Helix B
• Ellipse C
• Circular D

The SI Unit of magnetic induction is.

• Weber A
• Tesla B
• Gauss C
• Newton D

Cathode ray oscilloscope works by deflecting a beams

• Neutrons A
• Protons B
• Electrons C
• Positron 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 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