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

Ampere's law is applicable to:

• Circular path A
• Rectangular path B
• To any closed path C
• Nonwe of these D

The sum of electric and magnetic force is called.

• Maxwell force A
• Lorentz force B
• Newton's force C
• Centripetal force D

NIBA =

• cθ A
• θ/c B
• c²θ C
• c²/θ D

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

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

The unit of magnetic induction is:

• Tesla  A
• Weber B
• Weber metre C
• NAm^-1 D

The unit of magnetic induction B is

• Coulomb A
• Ampere B
• Coulomb/ampere C
• Weber/m² 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 magnetic field  inside solenoid is given:

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

If an electron is prijected in a magnetic field with velocity V, it will experience a force

• 
  A
• 
  B
• 
  C
• 
  D

An AVO meter can also be called as.

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

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

The name of the scientist who noted that a compass needle was deflected when placed near the current carrying conductor

• Henry A
• Faraday B
• Coloumb C
• Oersted 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 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

The SI unit of magnetic induction Tesla is equal to

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

The value of e/m is smallest for

• Proton A
• Electron B
• Beta particle C
• Positron D