Physics-
General
Easy
Question
The amount of heat liberated in the circuit after closing the switch S.
- zero
- none
The correct answer is: none
Related Questions to study
physics-
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
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
physics-General
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In the situation shown, a heavy wheel with a small drum attached is suspended by its frictionless axle from a ceiling. Attached to strings around the rims of the wheel and drum are two blocks of equal mass. The system is originally at rest. When the blocks are released.
In the situation shown, a heavy wheel with a small drum attached is suspended by its frictionless axle from a ceiling. Attached to strings around the rims of the wheel and drum are two blocks of equal mass. The system is originally at rest. When the blocks are released.
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physics-
Three capacitors are connected as shown in figure. Then the charge on C1 is
Three capacitors are connected as shown in figure. Then the charge on C1 is
physics-General
physics-
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.
physics-General
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An L shaped thin uniform rod of total length 2l is free to rotate in a vertical plane about a horizontal axis at P as shown in the figure.The bar is released from rest. Neglect air and contact friction. The angular velocity at the instant it has rotated through 90° and reached the dotted position shown is
An L shaped thin uniform rod of total length 2l is free to rotate in a vertical plane about a horizontal axis at P as shown in the figure.The bar is released from rest. Neglect air and contact friction. The angular velocity at the instant it has rotated through 90° and reached the dotted position shown is
physics-General
physics-
In the circuit shown
In the circuit shown
physics-General
physics-
In the figure shown, the potential difference between points A and B is :
In the figure shown, the potential difference between points A and B is :
physics-General
physics-
Some light bulbs are conected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W The circuit has a fuse F that burns out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs of the following, that can be used in the circuit without burning out the fuse
Some light bulbs are conected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W The circuit has a fuse F that burns out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs of the following, that can be used in the circuit without burning out the fuse
physics-General
physics-
In the circuit shown the variable resistance is so adjusted that the ammeter reading is same in both the position 1 and 2 of the key. The reading of ammeter is 2A. If E = 10 V, then x is
In the circuit shown the variable resistance is so adjusted that the ammeter reading is same in both the position 1 and 2 of the key. The reading of ammeter is 2A. If E = 10 V, then x is
physics-General
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The circuit shown has an ideal ammeter with zero resistance and four identical light bulbs which are initially illuminated. A person removes the bulb R4 from its socket there by permanently breaking the electrical circuit at that point. Which statement(s) is/are true about the circuit after removing the bulb?
The circuit shown has an ideal ammeter with zero resistance and four identical light bulbs which are initially illuminated. A person removes the bulb R4 from its socket there by permanently breaking the electrical circuit at that point. Which statement(s) is/are true about the circuit after removing the bulb?
physics-General
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For the circuit shown in the figure, potential difference VB – VA is
For the circuit shown in the figure, potential difference VB – VA is
physics-General
physics-
Five cells of emf’s 1V, 2V, 3V, 2V and 1V and having internal resistances 1,2,3,2 and 1 ohm respectively are connected as shown in figure
Five cells of emf’s 1V, 2V, 3V, 2V and 1V and having internal resistances 1,2,3,2 and 1 ohm respectively are connected as shown in figure
physics-General
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In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure
The value of the unknown mass m is
In an experiment with a beam balance on unknown mass m is balanced by two known mass m is balanced by two known masses of 16 kg and 4 kg as shown in figure
The value of the unknown mass m is
physics-General
physics-
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
A right triangular plate ABC of mass m is free to rotate in the vertical plane about a fixed horizontal axis through A. It is supported by a string such that the side AB is horizontal. The reaction at the support A is:
physics-General
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Two uniform rods of equal length but different masses are rigidly joined to form an L-shaped body, which is then pivoted as shown. If in equilibrium the body is in the shown configuration, ratio M/m will be:
Two uniform rods of equal length but different masses are rigidly joined to form an L-shaped body, which is then pivoted as shown. If in equilibrium the body is in the shown configuration, ratio M/m will be:
physics-General
