Home
Class 12
PHYSICS
In an A.C. generator, when the plane of ...

In an A.C. generator, when the plane of the armature is perpendicular to the magnetic field

A

both the flux linked and induced emf in the coil are zero.

B

the flux linked with it is zero, while induced emf is maximum.

C

flux linked is maximum while induced emf is zero.

D

both the flux and emf have their respective maximum values.

Text Solution

Verified by Experts

The correct Answer is:
B

As `phi=NAB cos90^(@)=0`
`epsi_(0)epsi_(0)sin 90^(@)=epsi_(0)=` maxiumum
`theta` is the angle between the field and normal to the plane of the coil
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise HIGHER ORDER THINKING SKILLS|8 Videos
  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise NCERT Exemplar|6 Videos
  • ELECTROMAGNETIC INDUCTION

    NCERT FINGERTIPS|Exercise Inductance|37 Videos
  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos
  • ELECTROMAGNETIC WAVES

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

A ring is rotated about diametric axis in a uniform magnetic field perpendicular to the plane of the ring. If initially the plane of the ring is perpendicular to the magnetic field. Find the instant of time at which EMF will be maximum & minimum respectively. (Figure: )

When a charged particle moves perpendicular to a magnetic field, then:

A circular coil of 100 turns and having an effective radius of 5cm carries a current of 0*1 ampere. How much work is required to turn it in an external magnetic field of 1*5 weber//m^2 through 180^@ about an axis perpendicular to magnetic field. The plane of the coil is initially perpendicular to the magnetic field.

A circular coil of 100 turns has an effective radius of 0.05 m and carries a current of 0.1 A. How much work is required to turn it in an external magnetic field of 1.5 Wb m^-2 through 180^@ about an axis perpendicular to the magnetic field. The plane of the coil is initially perpendicular to the magnetic field.

Assertion A conducting loop is rotated in a uniform magnetic field with constant angular velocity omega as shown in figure. At time t = 0, plane of the loop is perpendicular to the magnetic field. Induced emf produced in the loop is maximum when plane of loop is parallel to magnetic field. Reason When plane of loop is parallel to magnetic field, then magnetic flux passing through the loop is zero.

Velocity is Perpendicular to Magnetic Field |Questions

Assertion : We use a thick wire in the secondary of a step down transformer to reduce the production heat . Reason : When the plane of the armature is parallel to the lines of force of magnetic field , the magnitude of induced e.m.f. is maximum .

What is the potential energy of a magnetic dipole when it is placed perpendicular to the magnetic field?