Force between Current Carrying Wires

IMPORTANT

Force between Current Carrying Wires: Overview

This Topic covers sub-topics such as Force between Two Parallel Current Carrying Wires, Force on a Straight Current Carrying Wire in Uniform Magnetic Field and, One Ampere Electric Current

Important Questions on Force between Current Carrying Wires

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In given figure, X and Y are two long straight parallel conductors each carrying a current of 2 A. The force on each conductor is F newtons. When the current in each is changed to 1 A and reversed in direction, the force on each is now

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An infinite wire placed along z-axis, has current I1 in positive z-direction. A conducting rod placed in xy plane parallel to y-axis has current I2 in positive y-direction. The ends of the rod subtend angles of +30° and -60° at the origin with positive x-direction. The rod is at a distance a from the origin. Find net force on the rod.

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A conductor wire carrying current i is placed symmetrically and parallel to a long conducting sheet having a current per unit width j0 and width d, as shown in the figure. the force per unit length on the conductor wire will be

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A U shaped wire of mass m and length l is immersed with its two ends in mercury (see figure). The wire is in a homogeneous field of magnetic induction B. If a charge, that is, a current pulse q=idtsent through the wire, the wire will jump up. Calculate, from the height h that the wire reaches, the size of the charge or current pulse, assuming that the time of the current pulse is very small in comparison with the time of flight. Make use of the fact that impulse of force equals  Fdt, which equals mv. Evaluate q for following details:
B=0.1 Wb m-2, m=10 g,l=20 cm
& h=3 m.g=10 m s-2

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A rectangular loop of wire is oriented with the left corner at the origin, one edge along X-axis and the other edge along Y-axis as shown figure. A magnetic field is into the page and has a magnitude that is given by b= α y where α is  constant. Find the total magnetic force on the loop if it carries current i.

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Electric charge q is uniformly distributed over a rod of length l. The rod is placed parallel to a long wire carrying a current i. The separation between the rod and the wire is a. Find the force needed to move the rod along its length with a uniform velocity v.

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A parallel plate capacitor is charged by a battery. After some time the battery is disconnected and a dielectric slab of dielectric constant K is inserted between the plates. How would (i) the capacitance, (ii) the electric field between the plates and (iii) the energy stored in the capacitor, be affected?

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Which of the following expressions correctly describes for the force between two long parallel current carrying conductors:

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Figure shows a rectangular current-carrying loop placed 2 cm away from a long, straight, current-carrying conductor. What is the magnitude of the net force acting on the loop in  10 4 N .

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What is the expression for the force acting per unit length on one conductor due to the other for two parallel wires.

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The force acting per unit length on one conductor due to the other for two long parallel current-carrying wires is

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Calculate the net force acting on wire element BCD due to the 2A current.

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Where the neutral point lies?

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A thin uniform rod of negligible mass and length is l attached to the floor by a frictionless hinge as shown. A horizontal spring with force constant k connects the other end of the rod to a vertical wall. The rod is in a uniform magnetic field B directed in to the plane of the figure. There is a current i in the rod as shown and at equilibrium rod makes 53° angle with the floor. The energy stored by the spring in equilibrium is

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Two parallel wires carrying electric current in the same direction will attract each other because.

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A current carrying wire is placed parallel to the lines of force in a magnetic field.

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Find the force on the current carrying square loop due to infinitely long wire as shown in figure.

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Two current carrying wire segments are placed as shown in figure. If force on segment A due to segment B is along +x direction, what is the direction of force on segment B due to segment A ?

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Magnetic field in a region is radially outward. Find force on the current carrying wire as shown in figure.

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A circular wire ABC and a straight conductor ADC are carrying current i and are kept in the magnetic field B then considering points A and C

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