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

• 
  A
• 
  B
• 
  C
• None of the 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

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

• No unit A
• m^-1 B
• m^-2 C
• m-3 D

The torque in the coil can be increased by increasing:

• No. of turns A
• Current and magnetic field B
• Area of coil C
• All of the above 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

A Current flowing towards the reader is denoted by.

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

Torque on a current carrying coil

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

The sensitivity of galvanometer is given by

• CAN/B A
• C/BAN B
• BAN/C C
• BN/CA D

Brightness of screen of CRO controlled by

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

Shunt resistance is

• Low resistance A
• Zero resistance B
• High resistance C
• Impedance D

The force on a charge particle moving parallel to magnetic field is:

• Maximum A
• Minimum B
• Zero C
• None of these D

Weber is the unit of

• Magnetic flux A
• Permeability B
• magnetic force C
• None of above D

In current carrying long solenoid the magnetic field produced does not depend upon.

• The radius of solenoid A
• Number of turns per unit length B
• Current flowing through solenoid C
• All of the above D

The unit of magnetic induction B is

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

A device used for detection of current is called.

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

An AVO meter can also be called as.

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