Home
Class 12
PHYSICS
A triangular wire frame (each side =2m) ...

A triangular wire frame (each side =2m) is placed in a region of time variant magnetic field `dB//dt = (sqrt3) T//s`. The magnetic field is perpendicular to the plane of the triangle and its centre coincides with the centre of triangle. The base of the triangle AB has a resistance `1(Omega)` while the other two sides have resistance `2(Omega)` each. The magnitude of potential difference between the points A and B will be

A

0.4 V

B

0.6 V

C

1.2V

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
`e=(d phi)/(dt)=A(dA)/(dt)=1/2 2xx2 sin 60^(@) sqrt(3)=3V`
Induced emf in each side `=e//3`
`1V`
`I=e/R =(3)/(1+2+2)=3/5 A`
`V_(A)+1-Ixx1=V_(B)`
`implies V_(A)-V_(B)=I-1=(-2)/(5)`
`=-0.4V`.
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct|34 Videos

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS ENGLISH|Exercise Linked Comprehension|84 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS ENGLISH|Exercise True and False|3 Videos

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS ENGLISH|Exercise ddp.5.5|14 Videos

Similar Questions

Explore conceptually related problems

The magnetic field at the centre of square of side a is

A wire is bent in the form of an equilateral triangle PQR of side 10 cm and carries a current of 5.0 A. It is placed in a magnetic field B of magnitude 2.0 T directed perpendicularly to the plane of the loop. Find the forces on the three sides of the triangle.

With I as centre, draw a circle which will inscribe in triangle of each side of the triangle equal to 4.3 cm.

Figure shows an equilateral triangle ABC of side l carrying currents as shown, and placed in a uniform magnetic field B perpendicular to the plane of triangle. The magnitude of magnetic force on the triangle is

Figure shows an equilateral triangle ABC of side l carrying currents as shown, and placed in a uniform magnetic field B perpendicular to the plane of triangle. The magnitude of magnetic force on the triangle is

An equilateral triangle of conducting wire of side 'a' is kept in a time (t) varying magnetic field B=B_0t , where B_0 is constant in such a way that the centre of field coincides with the centroid of the triangle. Now, choose the correct statement.

The magnetic field at the centre of an equilateral triangular loop of side 2L and carrying a current i is

A uniform magnetic field exist in a region which forms an equilateral triangle of side a. The magnetic field is perpendicular to the plane of the triangle . A charged q enters into this magnetic field perpendicular to a side with speed v. The charge enters from midpoint and leaves the field from midpoint of other side. Magnetic induction in the triangles is

A uniform magnetic field exist in a region which forms an equilateral triangle of side a. The magnetic field is perpendicular to the plane of the triangle . A charged q enters into this magnetic field perpendicular to a side with speed v. The charge enters from midpoint and leaves the field from midpoint of other side. Magnetic induction in the triangles is

A metal rod of resistance R is fixed along a diameter of a conducting ring of radius r. There is a magnetic field of magnitude B perpendicular to the plane of the loop. The ring spins with an angular velocity omega about its axis. The centre of the ring is joined to its rim by an external wire W. The ring and W have no resistance. The current in W is