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An infinite plane of charge with `sigma=2epsilon_0''C/ m^2`is tilted at a 37° angle to the vertical direction as shown below. Find the potential difference, `V_A–V_B` in volts, between points A and B at 5 m distance apart. (where B is vertically above

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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When a Piece of Polythene is rubbed with wool, a charge of `–2xx 10^(-7)` is developed on polythene. The mass transferred to polythene is .....

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The protonic charge in 100 gm of water is ..........

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A copper sphere of mass 2 gm contains about `2xx 10^(22)` atoms. The charge on the nucleus of each atom is 29e. The fraction of electrons

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The rate of alpha partical falls on neutral spheare is `10^(12)` per second. The time in which sphere gets charged by 2µc is .........

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A charge Q is divided into two parts and then they are placed at a fixed distance. The force between the two charges is always maximum when the charges are

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two point charges repel each other with a force of 100 N. One of the charges is increased by 10% and other is reduced by 10%. The new force of repulsion at the same distance would be ........

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Given that `q_1 + q_2 = q` if the between `q_1` and `q_2` is maximum, `q_1/q`

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two small conducting sphere of equal radius have charges +1µc and – 2µc respectively and placed at a distance d from each other experience force F1 . If they are brought in contact and separated to the same distance, they experience force F2 . The ratio of F1 to F2 is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Three charges, each of value Q, are placed at the vertex of an equilateral triangle. A fourth charge q is placed at the centre of the triangle. If the charges remains stationery then, q =

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Tw o small charged spheres repal each other with a force `2 xx10^(-3) N` . The charge on one sphere is twice that of the other. When these two spheares displaced 10 cm further apart the force is `5xx 10^(-4) N` , then the charges on both the spheres are

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Three charges –`q_1 , + q_2 `and `–q_3` are placed as shown in figure. The x component of the force on –q1 is proportional to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two equal negative charges –q are fixed at points (o, a) and (o, –a). A positive charge Q is released from rest at the point (2a, o) on the X - axis. The charge Q will

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Four charges, each equal to –Q, are placed at the corners of a square and a charge +q isplaced at its centre. If the system is in equilibrium, the value of q is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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For the system shown in figure, if the resultant force on q is zero, then Q =

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two point positive charges q each are placed at (–a, o) and (a, o). A third positive charge qo is placed at (o, y). For which value of y the force at qo is maximum

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two identical charged spheres suspended from a common point by two massless strings of length l are initially a distance `d (d << l )` apart because of their mutual repulsion. The charge begins to leak from both the spheres at a constant rate. As a result the spheres approach each other with a velocity υ . Then function of distance x between them becomes

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Three identical spheres each having a charge q and radius R, are kept in such a way thateach touches the other two spheares. The magnitude of the electric force on any spheredue to other two is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two equal negative charges –q are fixed at points (o, a) and (o, –a) on the Y axis. Apositive charge q is released from rest at the point `x (x < < a)` on the X-axis, then thefrequency of motion is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two identical balls having like charges and placed at a certain distance apart repel eachother with a certain force. They are brought in contact and then moved apart to a distanceequal to half their initial separation. The force of repulsion between them increases 4.5times in comparison with the initial value. The ratio of the initial charges of the balls

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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