Physics-
General
Easy
Question
Charge q is distributed uniformly on an arc of radius R subtending an angle 
at its centre. Another charge –q is placed at the centre of the arc. The electric dipole moment of the system is
The correct answer is:
Related Questions to study
physics-
The variation of electric field between the two charges 
and 
along the line joining the charges is plotted against distance from q1 (taking rightward direction of electric field as positive) as shown in the figure. Then the correct statement is
The variation of electric field between the two charges and along the line joining the charges is plotted against distance from q1 (taking rightward direction of electric field as positive) as shown in the figure. Then the correct statement is
physics-General
physics-
A, B, C, D corners of a square are occupied by 
and 
charges respectively. The side of square is 2a. The field at the mid point of side CD is zero. What is the value of 
?
A, B, C, D corners of a square are occupied by and charges respectively. The side of square is 2a. The field at the mid point of side CD is zero. What is the value of ?
physics-General
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In the circuit shown, a potential difference of 60 V is applied across AB. The potential difference between the points M and N is
In the circuit shown, a potential difference of 60 V is applied across AB. The potential difference between the points M and N is
physics-General
physics-
One plate of a capacitor having charge Q, and plate area A, is pulled by a man keeping one plate at fix position, as shown in figure. What force should be applied by the man such that, plate moves with constant velocity
One plate of a capacitor having charge Q, and plate area A, is pulled by a man keeping one plate at fix position, as shown in figure. What force should be applied by the man such that, plate moves with constant velocity
physics-General
physics-
Three charges
and are placed as shown. S is a spherical Gaussian surface. Electric field at any point on S is
Three charges and are placed as shown. S is a spherical Gaussian surface. Electric field at any point on S is
physics-General
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Three positive and three negative charges of equal magnitude are placed at the corners of a regular hexagon PQRSTU. If electric field at O due to all the charges is twice the field at O due to a positive charge at R only, the order in which the changes are placed at PQRSTU is
Three positive and three negative charges of equal magnitude are placed at the corners of a regular hexagon PQRSTU. If electric field at O due to all the charges is twice the field at O due to a positive charge at R only, the order in which the changes are placed at PQRSTU is
physics-General
physics-
Four plates of area A are arranged as shown. The equivalent capacitance between A and B is
Four plates of area A are arranged as shown. The equivalent capacitance between A and B is
physics-General
physics-
Three point charges q, q, –2q are placed on an equilateral triangle of side a. The magnitude of dipole moment of the arrangement is
Three point charges q, q, –2q are placed on an equilateral triangle of side a. The magnitude of dipole moment of the arrangement is
physics-General
physics-
The equivalent capacitance of the combination shown in
The equivalent capacitance of the combination shown in
physics-General
physics-
Four wires each of length 2m are bent into four loops P,Q,R, and S and then suspended into a uniform magnetic field same current is passed in each loop The correct statement is
Four wires each of length 2m are bent into four loops P,Q,R, and S and then suspended into a uniform magnetic field same current is passed in each loop The correct statement is
physics-General
physics-
A charged particle q is shot towards another charged particle Q, which is fixed, with a speed v. It approaches Q upto a closet r and then returns. If q were given a speed of 2v, the closest distances of approach would be
A charged particle q is shot towards another charged particle Q, which is fixed, with a speed v. It approaches Q upto a closet r and then returns. If q were given a speed of 2v, the closest distances of approach would be
physics-General
physics-
Three charges –q1, +q2 and –q3 are placed as shown in the figure. The x-component of the force on –q1 is proportional to
Three charges –q1, +q2 and –q3 are placed as shown in the figure. The x-component of the force on –q1 is proportional to
physics-General
physics-
Two similar conducting balls of mass m are hung from silk threads of length L and carry similar charges q as shown in the figure. Assuming 
to be small, the distance x between the balls is
Two similar conducting balls of mass m are hung from silk threads of length L and carry similar charges q as shown in the figure. Assuming to be small, the distance x between the balls is
physics-General
physics-
A rectangular loop carrying current I is located near an infinite long straight conductor carrying current I as shown in the figure. The loop,
A rectangular loop carrying current I is located near an infinite long straight conductor carrying current I as shown in the figure. The loop,
physics-General
chemistry-
The product is
The product is
chemistry-General
