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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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Two very long straight parallel wires, parallel to y-axis, carry currents 4I and I, along +y direction and –y direction, respectively. The wires are passes through the x-axis at the points (d, 0, 0) and (– d, 0, 0) respectively. The graph of magnetic field z-component as one moves along the x-axis from x = – d to x = +d, is best given by
Two very long straight parallel wires, parallel to y-axis, carry currents 4I and I, along +y direction and –y direction, respectively. The wires are passes through the x-axis at the points (d, 0, 0) and (– d, 0, 0) respectively. The graph of magnetic field z-component as one moves along the x-axis from x = – d to x = +d, is best given by
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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
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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
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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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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°)
physics-General
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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
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A cylindrical tube of cross-sectional area A has two air tight frictionless pistons at its two ends. The pistons are tied with a straight two ends. The pistons are tied with a straight piece of metallic wire. The tube contains a gas at atmospheric pressure P0 and temperature T0 . If temperature of the gas is doubled then the tension in the wire is
A cylindrical tube of cross-sectional area A has two air tight frictionless pistons at its two ends. The pistons are tied with a straight two ends. The pistons are tied with a straight piece of metallic wire. The tube contains a gas at atmospheric pressure P0 and temperature T0 . If temperature of the gas is doubled then the tension in the wire is
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PV curve for the process whose VT curve is
PV curve for the process whose VT curve is
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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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Two moles of monoatomic gas is expanded from (P0, V0 ) to (P0 , 2V0 ) under isobaric condition. Let 
, be the heat given to the gas, 
the work done by the gas and 
the change in internal energy. Now the monoatomic gas is replaced by a diatomic gas. Other conditions remaining the same. The corresponding values in this case are 
, 
, 
respectively, then
Two moles of monoatomic gas is expanded from (P0, V0 ) to (P0 , 2V0 ) under isobaric condition. Let , be the heat given to the gas, the work done by the gas and the change in internal energy. Now the monoatomic gas is replaced by a diatomic gas. Other conditions remaining the same. The corresponding values in this case are , , respectively, then
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Figure shows the pressure P versus volume V graphs for two different gas sample at a given temperature. MA and MB are masses of two samples, nA and nB are numbers of moles. Which of the following must be incorrect.
Figure shows the pressure P versus volume V graphs for two different gas sample at a given temperature. MA and MB are masses of two samples, nA and nB are numbers of moles. Which of the following must be incorrect.
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A process is shown in the diagram. Which of the following curves may represent the same process ?
A process is shown in the diagram. Which of the following curves may represent the same process ?
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