electromagnetism

14
Created on By buzzerkings

Electromagnetism

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 Magnetic flux is maximum when angle between magnetic field and vector area is

2 / 53

e/m of an electron is given by the relationship, 

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 A neutron having mass equal to a proton (mp = 1.6 × 10^ 27 kg) is moving in a magnetic field of intensity 1.20 × 10^3 T with a speed of 2.0 x 10^-7 ms what is the Maximum force experienced by the neutron.

4 / 53

 Two long, parallel conductors which are free to move are arranged 1.0 cm apart. A steady current of 20 A flows in each of the conductor in the same direction. The conductors

5 / 53

 A charge is projected with velocity of 10m/s in a magnetic field of 10T at angle of 60°. If force of 2.78 x 10 ^17 N is exerted on the charge then value of charge will be:

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 If the value of magnetic flux is 10Wb, when magnetic lines of force containing magnetic field strength of 1Tesla passing through unit area of 10m² then the angle between magnetic field and unit area is:

7 / 53

Due to current in straight conductor the distance between magnetic field lines.

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A long straight current carrying conductor has current direction from bottom to top when held vertically. What will be the direction of magnetic field lines when observed from below the conductor?

9 / 53

The SI unit of magnetic flux is weber which is equal to

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 Two long parallel wires Wire 1 and Wire 2 repel each. What could be the reasons?

11 / 53

 Which one of the following relations is correct?

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Force experienced by a moving charge in a magnetic field is:

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A charge of two micro coulombs (2µ C) moves with velocity of two meter per second (2 m/sec) in the direction of two Tesla magnetic field. The force that will act on it will be:

14 / 53

 An electric charge in uniform motion produces:

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 A charged particle moves through a magnetic field in a direction perpendicular to it. Which of the following remain unchanged for the particle?

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Magnetic field is caused by

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When a charged particle moves through a magnetic field, it suffers a change in

18 / 53

When a charged particle is projected perpendicularly in a magnetic field its trajectory is

19 / 53

Which of the following in motion cannot be deflected by magnetic field

20 / 53

An electron enters in a uniform magnetic field making an angle 60° with field. The shape of its trajectory in magnetic field is

21 / 53

The magnitude of force on a moving charge is zero then angle between the velocity of the charge carrier and magnetic field is

22 / 53

 A strong magnetic field is applied to a stationary electron, then 

23 / 53

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

24 / 53

Work done by magnetic force on a moving charge particle is 

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 Which of the following cannot be deflected by a magnetic field?

26 / 53

 In the formula F = q (v × B)

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 Which of the following Statements is false? 

28 / 53

 If a charge particle enters a uniform magnetic field, there is a change in its

29 / 53

The magnitude of the force on a moving charge is maximum when angle between the velocity of the charge and the magnetic field is,

30 / 53

 A 2 MeV proton is moving perpendicular to a uniform magnetic field of 2.5 T. The force on the proton is:

31 / 53

The magnetic induction B is also called the

32 / 53

The unit of magnetic flux density is

33 / 53

Weber ampere per metre is equal to 

34 / 53

The Relationship between tesla(T) and smaller unit gauss(G) of magnetic induction is given by

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20 Wb magnetic flux passes through the 5m² area of certain sheet, the magnetic flux density would be

36 / 53

 If 0.5 T magnetic field is perpendicular to the 0.5 m² area then the magnetic flux would be 

37 / 53

Direction of magnetic flux is 

38 / 53

When area is placed perpendicular to external magnetic field the magnetic flux will be? 

39 / 53

When the coil is rotated between the pole pieces of a magnet, during one complete rotation of the coil, how often will the magnetic flux linked with coil be maximum and minimum?

40 / 53

A coil of area of cross section 10^-2m² and 100 turns is placed in a magnetic field of 1T, with its axis making an angle 60° with the field. Find the total flux associated with the field.

41 / 53

A magnetic field of 2.5 T passes perpendicular to a dise of radius 2cm. Find the magnetic flux associated with the disc.

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 A square coil 10^-2m² area is placed perpendicular to a uniform magnetic field of strength 10^3 web/m². The magnetic flux through the coil.

43 / 53

Magnetic field has its application in_____

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Which of the following quantity is not affected by a magnetic field?

45 / 53

A magnetic needle is kept in a non-uniform magnetic field. It experiences

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Magnetic lines of force 

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When a current carrying conductor is placed in a magnetic field. It moves from a region of

48 / 53

A uniform magnetic field is represented by a set of lines of force which are

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 The direction of the magnetic lines of force can be found by using:

50 / 53

The direction at a point on the magnetic lines of force can be taken along:

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The direction of the magnetic lines of force depends upon:

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Two parallel wires carrying currents in the opposite directions

53 / 53

The magnetic field due to the electric current in a conducting straight wire is:

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