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General
Easy
Question
Three point charges q, q, –2q are placed on an equilateral triangle of side a. The magnitude of dipole moment of the arrangement is
The correct answer is:
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The equivalent capacitance of the combination shown in
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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
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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
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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
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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
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A rectangular loop carrying current I is located near an infinite long straight conductor carrying current I as shown in the figure. The loop,
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The product is
The product is
chemistry-General
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A thin metal plate P is inserted between the plates of a parallel-plate capacitor of capacitance C in such a ways that its edges touch the two plates (see the figure). The capacitance now becomes
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A and B are two concentric spheres. If A is given a charge Q while B is earthed as shown in figure.
A and B are two concentric spheres. If A is given a charge Q while B is earthed as shown in figure.
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A particle of mass m and charge q is placed at rest in a uniform electric field E as shown and released. The kinetic energy it attains after moving a distance y is
A particle of mass m and charge q is placed at rest in a uniform electric field E as shown and released. The kinetic energy it attains after moving a distance y is
physics-General
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Four metallic plates, each having area A, are placed as shown. The distance between the consecutive plates is d. Alternate plates are connected to points A and B. The equivalent capacitance of the system between A and B is
Four metallic plates, each having area A, are placed as shown. The distance between the consecutive plates is d. Alternate plates are connected to points A and B. The equivalent capacitance of the system between A and B is
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The three capacitors in figure, store a total energy of
The three capacitors in figure, store a total energy of
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In the figure, the potential at X due to the charges + Q and – Q is, using SI units,
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physics-General
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A conductor AB of length l carrying a current i is placed perpendicular to a long straight conductor XY carrying a current l, as shown. the force on AB will act
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physics-General
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A circular coil of wire carries a current. PQ is a part of very long wire carrying a current and passing close to the circular coil. if the directions of currents are those shown in figure, then the direction of the force acting on PQ is
A circular coil of wire carries a current. PQ is a part of very long wire carrying a current and passing close to the circular coil. if the directions of currents are those shown in figure, then the direction of the force acting on PQ is
physics-General
