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

Write the SI unit of magnetic flux.

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

A photon while passing thorugh a magnetic field are deflected towards:

• North pole A
• South pole B
• Are ionized C
• None of these D

A dot represents the direction of magnetic field.

• Out of page A
• Into the page B
• Tangent to page C
• Parallels to page D

The unit of Magnetic flux is called.

• weber A
• weber/m² B
• NM^-1A^-1 C
• None of above 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

Torque on a current carrying coil

• τ=IBA cos A
• τ = ILB sinα B
• τ = IBA sinα C
• τ = ILBcosα D

An AVO meter can also be called as.

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

Sensitivity of a galvanometer can be increased by

• Decreasing the value of torsional couple A
• Decreasing number of turns B
• Decreasing area of plane of coil C
• Decreasing magnetic field 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

For a current carrying solenoid the term 'n' has unit as.

• No unit A
• m^-1 B
• m^-2 C
• m-3 D

The brightness of the spot of CRO screen is controlled by.

• Anode A
• Cathode B
• Grid C
• Deflecting plates D

The unit of magnetic induction B is

• Coulomb A
• Ampere B
• Coulomb/ampere C
• Weber/m² D

Current passing through the coil of galvanometer

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

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

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

A galvanometer is an electrical instrument used to

• Measure resistance A
• Measure voltage B
• Detect passage of current  C
• None of these D