Physics-
General
Easy
Question
A circular current carrying coil has a radius R. The distance from the centre of the coil on the axis where the magnetic induction will be 
th to its value at the centre of the coil, is
The correct answer is:
Related Questions to study
Physics-
Equipotential surfaces are shown in figure a and b The field in
A) 
B) 
Equipotential surfaces are shown in figure a and b The field in
A)
B)
Physics-General
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Which of the following pair is related as in work and force
Which of the following pair is related as in work and force
Physics-General
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Two parallel plates carry opposite charges such that the electric field in the space between them is in upward direction. An electron is shot in the space and parallel to the plates. Its deflection from the original direction will be
Two parallel plates carry opposite charges such that the electric field in the space between them is in upward direction. An electron is shot in the space and parallel to the plates. Its deflection from the original direction will be
Physics-General
Physics-
The acceleration of a charged particle in a uniform electric field is
The acceleration of a charged particle in a uniform electric field is
Physics-General
Physics-
Drawings I and II show two samples of electric field lines I II
I) 
II) 
Drawings I and II show two samples of electric field lines I II
I)
II)
Physics-General
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Figure shows lines of force for a system of two point charges The possible choice for the charges is q1 q2
Figure shows lines of force for a system of two point charges The possible choice for the charges is q1 q2
Physics-General
Physics-
Figure shows the electric lines of force emerging from a charged body. If the electric field at ‘A’ and ‘B’ are EA and EB respectively and if the displacement between ‘A’ and ‘B’ is ‘r’ then A B
Figure shows the electric lines of force emerging from a charged body. If the electric field at ‘A’ and ‘B’ are EA and EB respectively and if the displacement between ‘A’ and ‘B’ is ‘r’ then A B
Physics-General
Physics-
The sensitiveness of a moving coil galvanometer can be increased by decreasing
The sensitiveness of a moving coil galvanometer can be increased by decreasing
Physics-General
Physics-
Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the positive charge kept at the centre ‘O’ is
Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the positive charge kept at the centre ‘O’ is
Physics-General
Physics-
A negatively charged particle is situated on a straight line joining two other stationary particles each having charge +q. The direction of motion of the negatively charged particle will depend on
A negatively charged particle is situated on a straight line joining two other stationary particles each having charge +q. The direction of motion of the negatively charged particle will depend on
Physics-General
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The charges Q, +q and +q are placed at the vertices of a right angle triangle (isosceles triangle). The net electrostatic energy of the configuration is zero, if Q is equal to....
The charges Q, +q and +q are placed at the vertices of a right angle triangle (isosceles triangle). The net electrostatic energy of the configuration is zero, if Q is equal to....
Physics-General
Physics-
An electron of mass me, initially at rest, moves through a certain distance in a uniform electric field in time t1.A proton of mass mp , also initially at rest, takes time t2 to move through an equal distance in this uniform electric field. Neglecting the effect of gravity, the ratio 
is nearly equal to...
An electron of mass me, initially at rest, moves through a certain distance in a uniform electric field in time t1.A proton of mass mp , also initially at rest, takes time t2 to move through an equal distance in this uniform electric field. Neglecting the effect of gravity, the ratio is nearly equal to...
Physics-General
Physics-
Charges Q, 2Q and 4Q are uniformly distributed in three dielectric solid spheres 1,2 and 3 of radii null , R and 2R respectively. If magnitudes of the electric fields at point P at a distance R from the centre of spheres 1,2 and 3 are E1 , E2 and E3 respectively then,
Charges Q, 2Q and 4Q are uniformly distributed in three dielectric solid spheres 1,2 and 3 of radii null , R and 2R respectively. If magnitudes of the electric fields at point P at a distance R from the centre of spheres 1,2 and 3 are E1 , E2 and E3 respectively then,
Physics-General
Physics-
Find the potential at a point due to negative charge of 200 mC at a distance of 3m.
Find the potential at a point due to negative charge of 200 mC at a distance of 3m.
Physics-General
Physics-
Two identical charges each of 1
C are placed at the corners of an equilateral triangle of side 10cm. Calculate the electric field intensity at the centre of the triangle.
Two identical charges each of 1 C are placed at the corners of an equilateral triangle of side 10cm. Calculate the electric field intensity at the centre of the triangle.
Physics-General
