Home
Class 12
PHYSICS
A current is set up in a wire loop consi...

A current is set up in a wire loop consiting of a semicircle of radius 4.00 cm, a smaller concentric semicircle, and two radial straight lengths , all in the plane . Figure (a) shows the arrangment but is not drawn to scale. The magnitude of the magnetic field produced at the center of curvature si 74.25 `muT` . The smaller semicircle is then flipped over (rotated) until the loop is again entirely in the same plane figure (b). The magnetic field produced at the (same) center of curvature now has magnitude 15.75 `muT` and its direction is reversed from the initial magnetic field. What is the radius of the smaller semicircle?

Text Solution

Verified by Experts

The correct Answer is:
2 cm
Promotional Banner

Topper's Solved these Questions

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise single correct Answer Type|35 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise single correct Ansewer type|12 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise Archives (integer)|1 Videos

  • RAY OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise DPP 1.6|12 Videos

  • WAVE OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Comprehension Type|14 Videos

Similar Questions

Explore conceptually related problems

A current - carrying loop is shown in the figure. The magnitude of the magnetic field produced at a point O is

A long, straight wire of radius R carries a current distributed uniformly over its cross section. The magnitude of the magnetic field is

The current-carrying wire loop in Fig (a) lies all in one plane and consists of a semicle of radius 10.0 cm, a smaller semicicle is rotated out of that plkane by angle theta until it is perpendicular to the plane [Fig.(b)]. Figure (c) gives the magnitude of the net magnetic field at the center of curvature versus angle theta . what os the radius of the smaller semicircle ?

A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of a semicircle. Find the magnitude of the electric field at the centre of curvature of the semicircle.

In given figure, current I is flowing through straight wire and divided equally in two loops as shown in the figure. The magnitude of magnetic field intensity at the center (O) is

A conductor consists of a circular loop of radius R =10 cm and two straight, long sections as shown in figure. The wire lies in the plane of the paper and carries a current of i = 7.00 A Determine the magnitude and direction of the magnetic field at the centre of the loop.

A symmetric star shaped conducting wire loop is carrying a steady state current I as shown in the figure. The distance between the diametrically opposite vertices of the star is 4a. The magnitude of the magnetic field at the center of the loop is

A conductor is bent in the form of concentric semicircles as shown in the figure. The magnetic field at the point O is

Figure shows a current loop having two circular arcs joined by two radial lines. Find the magnetic field B at the centre O.

Figure shows a current loop having two circular arcs joined by two radial lines. Find the magnetic field B at the centre O.