Home
Class 12
PHYSICS
Three identical long solenoids P,Q and R...

Three identical long solenoids P,Q and R are connected to each other as shown in figure . If the magnetic field at the centre of P is 2.0 T, what would be the field at the centre of Q? Assume that the field due to any solenoid is confined within the volume of that solenoid only.

Text Solution

Verified by Experts

Solution: As the solenoids are identical, the currents in
Q and R will be same and will be half the current
in P. The magnetic field within a solenoid is given by
` B=(mu_0)ni. Hence the field in Q will be equal to the field`
in R and will be half the field in P, i.e., will be 1.0 T.
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA|Exercise Short Answer|12 Videos

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA|Exercise Objective 1|12 Videos

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA|Exercise Exercises|61 Videos

  • MAGNETIC FIELD

    HC VERMA|Exercise Exercises|61 Videos

  • MAGNETIC PROPERTIES OF MATTER

    HC VERMA|Exercise Exercises|9 Videos

Similar Questions

Explore conceptually related problems

There are 50 turns per cm length in a very long solenoid. It carries a current of 2.5A. The magnetic field at its centre on the axis is ______ T.

A straight wire carrying a current of 12 A is bent into a semicircular arc of radius 2.0 cm as shown in figure (a). Consider the magnetic field vecB at the centre of the arc. (a) What is the magnetic field due to the straight segments ? (b) In what way the contribution to vecB from the semicircle differs from that of a circular loop and in what way does it resemble ? ( c) Would your answer be different if the wire were bent into a semicircular arc of the same radius but in the opposite way as shown in figure (b) ?

Two identical conductors P and Q are placed on two friction less rails R and S in a uniform magnetic field directed into the plane. If P is moved in the direction shown in figure with a constant speed, then rod Q

A very long solenoid of length L has n layers. There are N turns in each layer. Diameter of the solenoid is D and it carries current I. The magnetic field at the centre of the solenoid is ______

(a) Magnetic field lines show the direction (at every point) along which a small magnetised needle aligns at the point). Do the magnetic field lines also represent the lines of force on a moving charged particle at every point? (b) Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why? (c) If magnetic monopoles existed, how would the Gauss's law of magnetism be modified? (d) Does a bar magnet exert a torque on itsell due to its own field? Does one element of a current-carrying wire exert a force on another element of the same wtre? (e) Magnetic field arises due to charges in motion. Can a system have magnetic moments even though its net charge is zero?

Two identical coils having same number of turns and carrying equal current have common centre and their planes are at right angles to each other. What is the ratio of magnitude of the resultant magnetic field at the centre and magnetic field due to one of the coils at the centre ?

Charges q, 2q,3q and 4q are placed at the corners A,B,C and D of a square as shown in the following figure. The directon of electric field at the centre of the square is along