Physics-
General
Easy
Question
A long straight wire, carrying current I, is bent at its midpoint to from an angle of 45°. Induction of magnetic field at point P, distant R from point of bending is equal to :
The correct answer is:
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A long thin walled pipe of radius R carries a current I along its length. The current density is uniform over the circumference of the pipe. The magnetic field at the center of the pipe due to quarter portion of the pipe shown, is
A long thin walled pipe of radius R carries a current I along its length. The current density is uniform over the circumference of the pipe. The magnetic field at the center of the pipe due to quarter portion of the pipe shown, is
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Find the magnetic field at P due to the arrangement shown
Find the magnetic field at P due to the arrangement shown
physics-General
Physics-
Two mutually perpendicular conductors carrying currents I1 and I2 lie in one plane. Locus of the point at which the magnetic induction is zero, is a
Two mutually perpendicular conductors carrying currents I1 and I2 lie in one plane. Locus of the point at which the magnetic induction is zero, is a
Physics-General
physics-
Infinite number of straight wires each carrying current I are equally placed as shown in the figure. Adjacent wires have current in opposite direction. Net magnetic field at point P is
Infinite number of straight wires each carrying current I are equally placed as shown in the figure. Adjacent wires have current in opposite direction. Net magnetic field at point P is
physics-General
physics-
A current I flows around a closed path in the horizontal plane of the circle as shown in the figure. The path consists of eight arcs with alternating radii r and 2r. Each segment of arc subtends equal angle at the common centre P. The magnetic field produced by current path at point P is
A current I flows around a closed path in the horizontal plane of the circle as shown in the figure. The path consists of eight arcs with alternating radii r and 2r. Each segment of arc subtends equal angle at the common centre P. The magnetic field produced by current path at point P is
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Three rings, each having equal radius R, are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current I is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
Three rings, each having equal radius R, are placed mutually perpendicular to each other and each having its centre at the origin of co-ordinate system. If current I is flowing thriugh each ring then the magnitude of the magnetic field at the common centre is
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physics-
A charge particle A of charge q = 2 C has velocity v = 100 m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r = 2 m).
A charge particle A of charge q = 2 C has velocity v = 100 m/s. When it passes through point A and has velocity in the direction shown. The strength of magnetic field at point B due to this moving charge is (r = 2 m).
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The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)
The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)
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Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (q < 180°)
Net magnetic field at the centre of the circle O due to a current carrying loop as shown in figure is (q < 180°)
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Physics-
A current of i ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field at 0 is
A current of i ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field at 0 is
Physics-General
physics-
One mole of an ideal diatomic gas is taken through the cycle as shown in the figure. 
: isochoric process 
: straight line on P-V diagram 
: isobaric process The average molecular speed of the gas in the states 1, 2 and 3 are in the ratio
One mole of an ideal diatomic gas is taken through the cycle as shown in the figure. : isochoric process : straight line on P-V diagram : isobaric process The average molecular speed of the gas in the states 1, 2 and 3 are in the ratio
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physics-
Three processes form a thermodynamic cycle as shown on P-V diagram for an ideal gas. Process 1 
2 takes place at constant temperature (300K). Process takes place at constant volume. During this process 40J of heat leaves the system. Process is adiabatic and temperature T3 is 275K. Work done by the gas during the process 3 1 is
Three processes form a thermodynamic cycle as shown on P-V diagram for an ideal gas. Process 1 2 takes place at constant temperature (300K). Process takes place at constant volume. During this process 40J of heat leaves the system. Process is adiabatic and temperature T3 is 275K. Work done by the gas during the process 3 1 is
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Physics-
Two vessels of the same volume contain the same gas at same temperature. If the pressure in the vessels be in the ratio of 1 : 2, then
Two vessels of the same volume contain the same gas at same temperature. If the pressure in the vessels be in the ratio of 1 : 2, then
Physics-General
physics-
The figure, shows the graph of logarithmic reading of pressure and volume for two ideal gases A and B undergoing adiabatic process. From figure it can be concluded that
The figure, shows the graph of logarithmic reading of pressure and volume for two ideal gases A and B undergoing adiabatic process. From figure it can be concluded that
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physics-
An enclosed ideal gas is taken through a cycle as shown in the figure. Then
An enclosed ideal gas is taken through a cycle as shown in the figure. Then
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