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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
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
physics-General
physics-
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.
physics-General
physics-
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
physics-
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
physics-General
physics-
The three capacitors in figure, store a total energy of
The three capacitors in figure, store a total energy of
physics-General
physics-
In the figure, the potential at X due to the charges + Q and – Q is, using SI units,
In the figure, the potential at X due to the charges + Q and – Q is, using SI units,
physics-General
physics-
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
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
physics-General
physics-
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
physics-
Three capacitors each of 1
are connected as shown. The capacitance between the points A and B is
Three capacitors each of 1 are connected as shown. The capacitance between the points A and B is
physics-General
physics-
The equivalent capacitance between A and B in the figure is 1
F. Then the value of the capacitance C is
The equivalent capacitance between A and B in the figure is 1F. Then the value of the capacitance C is
physics-General
physics-
A positively charged pendulum is oscillating in a uniform electric field as shown in figure. Its time period as compared to that when it was uncharged
A positively charged pendulum is oscillating in a uniform electric field as shown in figure. Its time period as compared to that when it was uncharged
physics-General
physics-
Charges 2Q and –Q are placed as shown. The point at which electric field intensity is zero will be
Charges 2Q and –Q are placed as shown. The point at which electric field intensity is zero will be
physics-General
physics-
A manometer shown in the figure contains a liquid of density . Find the difference in the levels when the manometer rotates with a constant angular velocity about one of its vertical limbs:
A manometer shown in the figure contains a liquid of density . Find the difference in the levels when the manometer rotates with a constant angular velocity about one of its vertical limbs:
physics-General
physics-
A cylindrical vessel of 90 cm height is kept filled upto brim. It has four holes 1,2,3,4 which are respectively at heights of 20 cm, 30 cm, 45 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from
A cylindrical vessel of 90 cm height is kept filled upto brim. It has four holes 1,2,3,4 which are respectively at heights of 20 cm, 30 cm, 45 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from
physics-General
physics-
Water flows through a frictionless duct with a cross-section varying as shown in figure. Pressure p at points along the axis is represented by:
Water flows through a frictionless duct with a cross-section varying as shown in figure. Pressure p at points along the axis is represented by:
physics-General
