is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant
Sahay Sir > Question Answers > is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1 / B2 is :
21
Nov
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1 / B2 is : is [...]
Two long, straight wires, one above the other, are separated by a distance 2a and are parallel to the x-axis. Let the y-axis be in the plane of the wires in the direction form the lower wire to the upper wire. Each wire carries current I in the +x-direction. What are the magnitude and direction of the net magnetic field of the two wires at a point in the plane of wires: (a) midway between them? (b) at a distance a above the upper wire? (c) at a distance a below the lower wire?
16
Oct
Two long, straight wires, one above the other, are separated by a distance 2a and are parallel to the x-axis. Let the y-axis be in the plane of the wires in the direction form the lower wire to the upper wire. Each wire carries current I in the +x-direction. What are the magnitude and direction [...]
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is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant ,
one above the other ,
straight wires ,
The dipole moment of a circular loop carrying a current I ,
the magnetic field at the centre of the loop is B2 . The ratio B1/B2 is: ,
Two long ,
Figure shows a square loop of edge a made of a uniform wire. A current i enters the loop at the point A and leaves it at the point C. Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it. `
16
Oct
Figure shows a square loop of edge a made of a uniform wire. A current i enters the loop at the point A and leaves it at the point C. Find the magnetic field at the point P which is on the perpendicular bisector of AB at a distance a/4 from it. ` is m [...]
In the x-y-plane, the region y>0 has a uniform magnetic field B 1 k ^ and the region y<0 has another uniform magnetic field B 2 k ^ . A positively charged particle is projected from the origin along the positive y-axis with speed V o = π m/s at t = 0, as shown in the figure. Neglect gravity in this problem. Let t = T be the time when the particle crosses the x-axis from below for the first time. If B 2 =4B 1 , the average speed of the particle, in m/s , along the x-axis in the time interval T is ________.
16
Oct
In the x-y-plane, the region y>0 has a uniform magnetic field B 1 k ^ and the region y<0 has another uniform magnetic field B 2 k ^ . A positively charged particle is projected from the origin along the positive y-axis with speed V o = π m/s at t = 0, as [...]
A moving coil galvanometer has 50 turns and each turn has an area 210 . The magnetic field produced by the magnet inside the galvanometer is 0.02 . The torsional constant of the suspension wire is 10 . When a current flows through the galvanometer, a full scale deflection occurs if the coil rotates by 0.2 . The resistance of the coil of the galvanometer is 50 . This galvanometer is to be converted into an ammeter capable of measuring current in the range 01.0 . For this purpose, a shunt resistance is to be added in parallel to the galvanometer. The value of this shunt resistance, in , is __________.
16
Oct
A moving coil galvanometer has 50 turns and each turn has an area 210 . The magnetic field produced by the magnet inside the galvanometer is 0.02 . The torsional constant of the suspension wire is 10 . When a current flows through the galvanometer, a full scale deflection occurs if the coil rotates by [...]
Two parallel wires in the plane of the paper are distance X0 apart. A point charge is moving with speed u between the wires in the same plane at a distance X1 from one of the wires. When the wires carry current of magnitude I in the same direction , the radfius of curvature of the path of the point charge is R1. In contrast, if the currentsd I in the two wires have directions opposite to each other, the radius of curvature of the path is R2. if X0/X1 = 3, the value of R1/R2 is
16
Oct
Two parallel wires in the plane of the paper are distance X0 apart. A point charge is moving with speed u between the wires in the same plane at a distance X1 from one of the wires. When the wires carry current of magnitude I in the same direction , the radfius of curvature of [...]
A uniform magnetic field B exists in the region between x = 0 and x = 3 R/2 (region 2 in the figure) pointing normally into the plane of the paper. A particle with charge +Q and momentum p directed along x-axis enters region 2 from region 1 at point P 1 (y =−R). Which of the following option(s) is/are correct?
16
Oct
A uniform magnetic field B exists in the region between x = 0 and x = 3 R/2 (region 2 in the figure) pointing normally into the plane of the paper. A particle with charge +Q and momentum p directed along x-axis enters region 2 from region 1 at point P 1 (y =−R). Which [...]
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2 . The ratio B1/B2 is:
16
Oct
The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B1 . When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2 . The ratio B1/B2 is: is m [...]