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Five identical parallel conducting plates each of area A have separation ‘d’ between successive surfaces. The plates are connected to the terminal of a battery as shown in the fig. The effective capacitance of the circuit is
The correct answer is:
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The amount of heat liberated in the circuit after closing the switch S.
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Two capacitors C1 and C2 are charged to same potential V, but with opposite polarity as shown in the figure. The switch S1 and S2 are then closed
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A capacitor having capacitance ‘C’ is charged by a battery having e.m.f. 2V (Battery is disconnected after charging). Now this charged capacitor is connected to another battery having e.m.f. V. The positive plate of capacitor is connected with –ve terminal of battery & vice-versa. The amount of heat produced after connecting it with battery.
A capacitor having capacitance ‘C’ is charged by a battery having e.m.f. 2V (Battery is disconnected after charging). Now this charged capacitor is connected to another battery having e.m.f. V. The positive plate of capacitor is connected with –ve terminal of battery & vice-versa. The amount of heat produced after connecting it with battery.
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The total power content of an AM wave is 1500 W For 100% modulation, the power transmitted by the carrier is
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A plank with a uniform sphere placed on it, rests on a smooth horizontal plane. Plank is pulled to right by a constant force F. If the sphere does not slip over the plank.
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A yo-yo is resting on a rough horizontal table. Forces F1, F2 and F3 are applied separately as shown. The correct statement is
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A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
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A uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its mid point elastically. If the particle comes to rest after collision find the value of M/m =?
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A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :
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Two particles of equal mass m at A and B are connected by a rigid light rod AB lying on a smooth horizontal table. An impulse J is applied at A in the plane of the table and perpendicular at AB. Then the velocity of particle at A is:
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A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision is:
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision is:
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A ball of mass m moving with velocity v, collide with the wall elastically as shown in the figure. After impact the change in angular momentum about P is:
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A thin uniform straight rod of mass 2 kg and length 1 m is free to rotate about its upper end when at rest. It receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. The kinetic energy of rod just after impact is
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