Physics
General
Easy
Question
Current through ABC and A’ B’ C’ is I. What is the magnetic field at P? (Here C’ B’ PBC are collinear)



 Zero
The correct answer is:
Magnetic field
Related Questions to study
physics
The ratio of pathlength and the respective time interval is
The ratio of pathlength and the respective time interval is
physicsGeneral
physics
A particle is thrown in upward direction with initial velocity of 60 m/s. Find average speed and average velocity after 10 seconds. [g =10 MS^{2}]
A particle is thrown in upward direction with initial velocity of 60 m/s. Find average speed and average velocity after 10 seconds. [g =10 MS^{2}]
physicsGeneral
physics
The work done in deforming body is given by
Let L be length of body, A the area of crosssection and the increase in length.
Force necessary to deform the body is
If body is deformed by a distance, then
Hence, work done for unit volume is
Force necessary to deform the body is
If body is deformed by a distance, then
Hence, work done for unit volume is
The work done in deforming body is given by
physicsGeneral
Let L be length of body, A the area of crosssection and the increase in length.
Force necessary to deform the body is
If body is deformed by a distance, then
Hence, work done for unit volume is
Force necessary to deform the body is
If body is deformed by a distance, then
Hence, work done for unit volume is
physics
A wire of length and radius is stretched between and without the application of any tension. If is the Young’s modulus of the wire and it is stretched like , then the tension in the wire will be
Increase in length of one segment of wire
So,
A wire of length and radius is stretched between and without the application of any tension. If is the Young’s modulus of the wire and it is stretched like , then the tension in the wire will be
physicsGeneral
Increase in length of one segment of wire
So,
physics
A cube of aluminium of sides 0.1 m is subjected to a sharing force of 100 N. The top face of the cube is displaced through 0.02 cm with respect to the bottom face. The shearing strain would be
Shearing strain =
A cube of aluminium of sides 0.1 m is subjected to a sharing force of 100 N. The top face of the cube is displaced through 0.02 cm with respect to the bottom face. The shearing strain would be
physicsGeneral
Shearing strain =
physics
A uniform slender rod of length L, crosssectional area A and Young’s modulus Y is acted upon by the forces shown in the figure. The elongation of the rod is
Net elongation of the rod is
A uniform slender rod of length L, crosssectional area A and Young’s modulus Y is acted upon by the forces shown in the figure. The elongation of the rod is
physicsGeneral
Net elongation of the rod is
physics
The graph shows the behaviour of a length of wire in the region for which the substance obeys Hooke’s law. and represent
Graph between applied force and extension will be straight line because in elastic range
Applied force extension
But the graph between extension and stored elastic energy will be parabolic in nature
As or
Applied force extension
But the graph between extension and stored elastic energy will be parabolic in nature
As or
The graph shows the behaviour of a length of wire in the region for which the substance obeys Hooke’s law. and represent
physicsGeneral
Graph between applied force and extension will be straight line because in elastic range
Applied force extension
But the graph between extension and stored elastic energy will be parabolic in nature
As or
Applied force extension
But the graph between extension and stored elastic energy will be parabolic in nature
As or
physics
If the shear modulus of a wire material is 5.9 then the potential energy of a wire of in diameter and 5 cm long twisted through an angle of 10’ , is
To twist the wire through the angle it is necessary to do the work
And
And
If the shear modulus of a wire material is 5.9 then the potential energy of a wire of in diameter and 5 cm long twisted through an angle of 10’ , is
physicsGeneral
To twist the wire through the angle it is necessary to do the work
And
And
physics
The Young’s modulus of the material of a wire is equal to the
Young’s modulus of material
If longitudinal strain is equal unity, then
Linear stress produced
If longitudinal strain is equal unity, then
Linear stress produced
The Young’s modulus of the material of a wire is equal to the
physicsGeneral
Young’s modulus of material
If longitudinal strain is equal unity, then
Linear stress produced
If longitudinal strain is equal unity, then
Linear stress produced
Maths
MathsGeneral
physics
Two short bar magnets of equal dipole moment M are fastened perpendicularly at their centers, figure. The magnitude of resultant of two magnetic field at a distance from the center on the bisector of the right angle is
Resolving the magnetic moments along and perpendicular to figure we find that component perpendicular cancel out. Resultant magnetic moment along
The point lies on axial line of magnet of moment
The point lies on axial line of magnet of moment
Two short bar magnets of equal dipole moment M are fastened perpendicularly at their centers, figure. The magnitude of resultant of two magnetic field at a distance from the center on the bisector of the right angle is
physicsGeneral
Resolving the magnetic moments along and perpendicular to figure we find that component perpendicular cancel out. Resultant magnetic moment along
The point lies on axial line of magnet of moment
The point lies on axial line of magnet of moment
physics
Two magnets of equal mass are joined at 90 each other as shown in figure. Magnet has a magnetic moment times that of . The arrangement is pivoted so that it is free to rotate in horizontal plane. When in equilibrium, what angle should make with magnetic meridian?
In equilibrium, the resultant magnetic moment will be along magnetic meridian. Let make with resultant
Two magnets of equal mass are joined at 90 each other as shown in figure. Magnet has a magnetic moment times that of . The arrangement is pivoted so that it is free to rotate in horizontal plane. When in equilibrium, what angle should make with magnetic meridian?
physicsGeneral
In equilibrium, the resultant magnetic moment will be along magnetic meridian. Let make with resultant
physics
The pressure applied from all directions on a cube is . How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is and the coefficient of volume expansion is
If coefficient of volume expansion is and rise in temperature is then
Volume elasticity
Volume elasticity
The pressure applied from all directions on a cube is . How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is and the coefficient of volume expansion is
physicsGeneral
If coefficient of volume expansion is and rise in temperature is then
Volume elasticity
Volume elasticity
physics
A wire has length 1 m and crosssectional area 1 The work required to increase the length by 2 mm is
Work done =
= 4
= 4
A wire has length 1 m and crosssectional area 1 The work required to increase the length by 2 mm is
physicsGeneral
Work done =
= 4
= 4
physics
The diagram shows a forceextension graph for a rubber band. Consider the following statements
I. It will be easier to compress this rubber than expand it
II. Rubber does not return to its original length after it is stretched
III. The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph
Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating
The diagram shows a forceextension graph for a rubber band. Consider the following statements
I. It will be easier to compress this rubber than expand it
II. Rubber does not return to its original length after it is stretched
III. The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph
physicsGeneral
Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating