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

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

To convert a galvanometer into a volt meter a high resistance is connected.

• In series A
• In parallel B
• In perpendicular C
• Along tangent D

In current carrying long solenoid the magnetic field produced does note depend upon

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

A battery is used in

• ohmmeter A
• Ammeter B
• Galvanometer C
• Voltemeter D

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

A sensitive galvanometer is

• Unstable A
• Stable B
• Moderate C
• Both B and C D

Grid in cathode ray oscilloscope controls.

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

The unit of permiability of free space is:

• T.m/A A
• T.m²/A B
• T.m/A² C
• None of these D

Energy stored per uint volume inside a solenoid is called as

• energy density A
• Electric flux B
• Work C
• Volume charge density D

If current flowing through a solenoid becomes four times, then magnetic field inside becomes.

• two times A
• three times B
• four times C
• Half D

The permeability of free space is measured in

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

A device used for detection of current is called.

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

The unit of Magnetic flux is called.

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

Ampere's law is applicable to:

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

To convert a galvanometer into an ammeter, we connect with it a

• Shunt resistance A
• Low value parallel B
• Low value by pass resistor C
• All of above D

The sum of electric and magnetic force is called.

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