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

Magnetic flux density is measured in

• Weber A
• Weber/m2 B
• Tesla -m C
• Gauss 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

Torque is produced in a current carrying coil when it is placed in a

• Magnetic field A
• Electric field B
• Gravitational field C
• Nuclear field 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

A current carrying conductor experience maximum magnetic force in a uniform magnetic field when it is placed.

• Perpendicular to field A
• Parallel to field B
• At an angle of 60 ^o to the field C
• None of these 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 order to measure potential difference voltmeter is always connected in.

• Series A
• Parallel B
• Both a and b C
• Neither in series nor in parallel D

A Current flowing towards the reader is denoted by.

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

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

• Be doubled A
• Become half B
• Not change C
• Be four time D

Which one has the least resistance.

• Galvanometer A
• Ammeter B
• Ohm meter C
• Volta meter D

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

Write the SI unit of magnetic flux.

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

One weber is equal to:

• N.A ²/m A
• N.m²/A B
• N.A/m C
• N.m/A D

The magnetic flux will be max, For an angle of:

• 0° A
• 60° B
• 90° C
• 180° 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

The SI unit of flux density is.

• NA-1 m2 A
• NA-1 m-1 B
• NAm-1 C
• NA-1 m D

The galvanometer can be made sensitive by making the factor BAN/C

• Large A
• Small B
• Constant C
• Zero D