Physics-
General
Easy
Question
The magnetic induction at the centre 
in the figure shown is
The correct answer is:
In the following figure, magnetic fields at due to section 1, 2, 3 and 4 are considered as 
and 
respectively
So 
Related Questions to study
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A conducting loop carrying a current 
is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to
A conducting loop carrying a current is placed in a uniform magnetic field pointing into the plane of the paper as shown. The loop will have a tendency to
physics-General
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A current 
is flowing through the loop. The direction of the current and the shape of the loop are as shown in the figure. The magnetic field at the centre of the loop is 
times. 
A current is flowing through the loop. The direction of the current and the shape of the loop are as shown in the figure. The magnetic field at the centre of the loop is times.
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Current is flowing in conductor shaped as shown in the figure. The radius of the curved part is 
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Current is flowing in conductor shaped as shown in the figure. The radius of the curved part is and the length of straight portion is very large. The value of the magnetic field at the centre will be
physics-General
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Methanol cannot be dried with anhydrous 
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Methanol cannot be dried with anhydrous because
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A block of mass m is being pulled up the rough incline by an agent delivering constant power P. The coefficient of friction between the block and the incline is 
. The maximum speed of the block during the course of ascent is
A block of mass m is being pulled up the rough incline by an agent delivering constant power P. The coefficient of friction between the block and the incline is . The maximum speed of the block during the course of ascent is
physics-General
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Two identical blocks A and B are placed on two inclined planes as shown in diagram. Neglect air resistance and other friction
Read the following statements and choose the correct options. Statements I : Kinetic energy of 'A' on sliding to J will be greater than the kinetic energy of B on falling to M.
Statements II : Acceleration of 'A' will be greater than acceleration of 'B' when both are released to slide on inclined plane.
Statements III : Work done by external agent to move block slowly from position B to O is negative
Two identical blocks A and B are placed on two inclined planes as shown in diagram. Neglect air resistance and other friction
Read the following statements and choose the correct options. Statements I : Kinetic energy of 'A' on sliding to J will be greater than the kinetic energy of B on falling to M.
Statements II : Acceleration of 'A' will be greater than acceleration of 'B' when both are released to slide on inclined plane.
Statements III : Work done by external agent to move block slowly from position B to O is negative
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For a particle moving on a straight line the variation of acceleration with time is given by the graph as shown. Initially the particle was at rest. Then the corresponding kinetic energy of the particle versus time graph will be
For a particle moving on a straight line the variation of acceleration with time is given by the graph as shown. Initially the particle was at rest. Then the corresponding kinetic energy of the particle versus time graph will be
physics-General
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In the figure the variation of components of acceleration of a particle of mass 1 kg is shown w.r.t. time. The initial velocity of the particle is 
m/s. The total work done by the resultant force on the particle in time interval from t = 0 to t = 4 seconds is :
In the figure the variation of components of acceleration of a particle of mass 1 kg is shown w.r.t. time. The initial velocity of the particle is m/s. The total work done by the resultant force on the particle in time interval from t = 0 to t = 4 seconds is :
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A collar ‘B’ of mass 2 kg is constrained to move along a horizontal smooth and fixed circular track of radius 5 m. The spring lying in the plane of the circular track and having spring constant 200 N/m is undeformed when the collar is at ‘A’. If the collar starts from rest at ‘B’, the normal reaction exerted by the track on the collar when it passes through ‘A’ is :
A collar ‘B’ of mass 2 kg is constrained to move along a horizontal smooth and fixed circular track of radius 5 m. The spring lying in the plane of the circular track and having spring constant 200 N/m is undeformed when the collar is at ‘A’. If the collar starts from rest at ‘B’, the normal reaction exerted by the track on the collar when it passes through ‘A’ is :
physics-General
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The blocks A and B shown in the figure have masses 
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The blocks A and B shown in the figure have masses = 5 kg and = 4 kg. The system is released from rest. The speed of B after A has travelled a distance 1 m along the incline is
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An infinitely long straight conductor 
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An infinitely long straight conductor is fixed and a current is passed through it. Another movable straight wire of finite length and carrying current is held perpendicular to it and released. Neglect weight of the wire
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A wire shown in figure carries a current of 40 A. If 
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will be
A wire shown in figure carries a current of 40 A. If , the magnetic field at point will be
physics-General
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and 
are long parallel conductors separated by certain distance. 
is the mid-point between them (see the figure). The net magnetic field at is 
. Now, the current 2 A is switched off. The field at now becomes
and are long parallel conductors separated by certain distance. is the mid-point between them (see the figure). The net magnetic field at is . Now, the current 2 A is switched off. The field at now becomes
physics-General
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The figure shows the cross-section of a long cylindrical conductor of radius 
carrying a uniformly distributed current 
The magnetic field due to current at is
The figure shows the cross-section of a long cylindrical conductor of radius carrying a uniformly distributed current The magnetic field due to current at is
physics-General
chemistry-
Which of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
Which of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
chemistry-General
