Generate Quiz 6997FF36039BF

1 / 10

Transformer can convert _________

Elimination Tool

A) Low DC voltage

B) High DC voltage

C) Battery voltage

D) AC voltage

2 / 10

A magnetic needle is placed in a uniform magnetic field and is aligned with the field. The needle is now rotated by an angle of 60 degrees and work done is W. The torque on the magnetic needle at this position is

Elimination Tool

A) 2√3 W

B) √3 W

C) √(3/2) W

D) √(3/4) W

3 / 10

Magnetic field inside a long solenoid is:

Elimination Tool

A) Varying with radial distance

B) Uniform

C) Zero

D) Not enough Information

4 / 10

The core of a transformer is made up of:

Elimination Tool

A) Copper

B) Aluminium

C) Iron

D) Steel

5 / 10

A charge of lμC is moving antiparallel to magnetic lines of force, then the magnetic force acting on charge is

Elimination Tool

A) 0

B) vB

C) vB sin Θ

D) qvB

6 / 10

For a metal rod of length L moving with speed V perpendicular to the magnetic field, the motional EMF at its end is:

Elimination Tool

A) IvB

B) IvB2

C) Iv2B

D) None of these options are correct

7 / 10

Moving charges have:

Elimination Tool

A) Electric field and magnetic field both

B) None of these

C) Magnetic field only

D) Electric field only

8 / 10

If we make the magnetic field stronger, the value of induced current is

Elimination Tool

A) Decreased

B) Increased

C) Vanished

D) Kept constant

9 / 10

If a conductor of length 7m is placed in a magnetic field of strength 0.3 T carrying current 1 A, parallel to the field. What will be the force, acting on it, due to this magnetic field?

Elimination Tool

A) 7 N

B) 0 N

C) 3.1 N

D) 2.1 N

10 / 10

If magnetic field vector is B = (i + 5j + 2k ) and area vector is (6i – 2j +2k) then flux related to this is

Elimination Tool

A) 10 Wb

B) 15 Wb

C) 20 Wb

D) 0 Wb

Your score is

0%

Generate Quiz 6997FF36039BF

PLS Academy App!

QUICK LINKS

PREP

COURSES

SUPPORT