Question # 1

The magnetic field inside a solenoid can be increased by:

Choose an answer

Increasing n

Decreasing I

Increasing I

By using iron core within solenoid

All correct except (B)

A current carrying conductor sets up its own:

Choose an answer

Electric field

Nuclear field

Magnetic field

Both (A) and (C)

All of these

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Choose an answer

IT = 10^-4G

IT = 10⁵G

IT = 10³G

IT = 10⁴G

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Choose an answer

F =q(v/B)

F=q²(v x B)

F=q(v x B)

F= vx B

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Choose an answer

parallel to the field

Perpendicular to the field

At an angle of 45 to the field

None of the above

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Choose an answer

Heating effect of current

Chemical effect of current

Magnetic effect of current

Electromagnetic effect of current

The working of galvanometer depends upon torque exerted on a current carrying coil in

Choose an answer

magnetic field

electric field

gravitational field

nuclear field

The strength of magnetic field around the current conductor is

Choose an answer

Smaller near the conductor

Greater near the conductor

Greater at the large distance from the conductor

Constant near and away from the conductor

The SI unit of flux density is

Choose an answer

Newton/Amp-meter

Newton-m/Ampere

Newton-m/Amp²

Newton-Amp/meter

A resistance used in voltmeter is called

Choose an answer

shunt resistance

high resistance

low resistance

zero resistance

Electron gun consist of

Choose an answer

three anodes

heating cathode

three anodes

three anodes , heating cathode, grid

(CRO) Cathode ray oscilloscope is a device used for high speed

Choose an answer

velocity

graph plotting

time-velocity

none of these

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Choose an answer

Circular and endless

Oval in shape and endless

Straight

Parabolic

All are true

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Choose an answer

magnetic flux

magnetic flux density

magnetic induction

magnetic field intensity

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Choose an answer

-y direction

+y direction

+z direction

-z direction

None of these

Amperean path is a:

Choose an answer

Closed path

Rectangular path

Circular path

Any of above

Broken path

More Classes

Other Links

ECAT Physics Chapter 14 Electromagnetism Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer