Home
Class 12
PHYSICS
Two circular loops are parallel, coaxial...

Two circular loops are parallel, coaxial, and almost in contact ,1.00mm apart. Each loop is 10.0 cm in radius. The loop carries a counterclockwise current of 140A.
(a) Calculate the magnetic force exerted by the bottom loop on the top loop. The upper loop has a mass of 0.0210kg.
(b)Calculate its acceleration, assuming that the only forces acting on it are the force in part and the gravitational force.

Text Solution

Verified by Experts

Model the two wires as straight parallel wires.
(a) `F_B=(mu_0I^2l)/(2pia)`

`F_B=((4pixx10^-7)(140)^2(2pi)(0.100))/(2pi(1.00xx10^-3))`
`=2.46N` upward
(b) `a_("loop")=(2.46N-m_("loop")g)/(m_(lo op))=107m//s^2` upward
Promotional Banner

Topper's Solved these Questions

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise Exercise (subjective )|10 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise Exercise (single Correct )|75 Videos

  • SOURCES OF MAGNETIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise Concept Exercise 2.1|35 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 circular loop of one turn carries a current of 5.00 A. If the magnetic field B at the centre is 0.200 mT, find the radius of the loop.

A circular loop has a radius of 5 cm and it is carrying a current of 0.1 amp . It magneitc moment is

A current loop of arbitrary shape lies in a uniform magnetic field B. show that the net magnetic force acting on the loop is zero.

A circular loop of area 1cm^2 , carrying a current of 10 A , is placed in a magnetic field of 0.1 T perpendicular to the plane of the loop. The torque on the loop due to the magnetic field is

A circular loop of area 0.01 m^(2) carrying a current of 10 A , is held perpendicular to a magnetic field of intensity 0.1 T . The torque acting on the loop is

A semi circular current loop is placed in an uniform magnetic field of 1 tesla as shown. If the radius of loop is 1 m, the magnetic force on the loop is

A rectangular loop of sides 20 cm and 10 cm carries a current of 5.0 A. A uniform magnetic field of magnituded 0.20 T exists parallel ot the longer side of the loop (a) What is the force acting on the loop? (b) what is the torque acting on the loop?

A rectangular loop of wire of size 2 cm xx 5cm carries a steady current of 1A. A straight long wire carrying 4 A current is kept near the loop as shown. If the loop and the wire are coplanar, find (i) the torque acting on the end (ii) the magnitude and direction of the force on the loop due to the current carrying wire.

A square loop of 5 cm carrying a current 0.2 A in the clockwise direction is placed at a distance of 10 cm from an infinity long wire carrying a current of 1 A as shown. Calculate (i) the resultant magnetic force and (ii) the torque, if any, acting on the loop.

A current of 2*00 A exists in a square loop of edge 10*0 cm . Find the magnetic field B at the centre of the square loop.