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1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. (A) the ratio of capacitances of big and small drop is 10 (B) the ratio of potential of big and small drop is 100 (c) the ratio of surface charge densities of big and small drop is 10 (D) the ratio of energy stored of big and small drop is 10^5
30
Nov
1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. (A) the ratio of capacitances of big and small drop is 10 (B) the ratio of potential of big and small drop is 100 (c) the ratio of surface charge densities of big and small drop is [...]
Two capacitors C1 and C2 in a circuit are joined as shown. If VA = V1, VB = V2, the potential of point P is
30
Nov
Two capacitors C1 and C2 in a circuit are joined as shown. If VA = V1, VB = V2, the potential of point P is the potential of point P is Two capacitors C1 and C2 in a circuit are joined as shown. If VA = V1 VB = V2 November 30, 2020 Category: Cengage [...]
In the given circuit if point C is connected to the earth and a potential of +80V is given to the point A, the potential at B is
30
Nov
In the given circuit if point C is connected to the earth and a potential of +80V is given to the point A, the potential at B is In the given circuit if point C is connected to the earth and a potential of +80V is given to the point A the potential at B [...]
Three capacitors of capacitances 3μF,9μF and 18μF are connected in series across a 120V supply line. The Charged capacitors are then disconnected from the line and reconnected with plates of same polarities together and no-external voltage. the charge on 3μF is
30
Nov
Three capacitors of capacitances 3μF,9μF and 18μF are connected in series across a 120V supply line. The Charged capacitors are then disconnected from the line and reconnected with plates of same polarities together and no-external voltage. the charge on 3μF is Minimum number of capacitors of 4μF capacitance each required to obtain a capacitor of [...]
Two capacitor of capacitance 5μF and 10μF are charged to potential 40V and 10V respectively. Now the two capacitors ate connected with plates of same polarities together . (A) the common potential will be 20V (B) the final charges of capacitors will be 100μC and 200μC (c) the ratio of total energy stored in capacitors before and after connection is 3:2 (D) the loss energy of system is 1500μJ
30
Nov
Two capacitor of capacitance 5μF and 10μF are charged to potential 40V and 10V respectively. Now the two capacitors ate connected with plates of same polarities together . (A) the common potential will be 20V (B) the final charges of capacitors will be 100μC and 200μC (c) the ratio of total energy stored in capacitors [...]
Two capacitors of capacitances 3μF and 6μF are charged to a potential of 12V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other.
30
Nov
Two capacitors of capacitances 3μF and 6μF are charged to a potential of 12V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. Two capacitors of capacitances 3μF and 6μF are charged to a potential of 12V each. They are now connected [...]
A conducting sphere of radius 10 cm is charged with 10 μC. Another uncharged sphere of radius 20 cm is allowed to touch it for some time. After that if the spheres are separated, then surface density of charges on the spheres will be in the ratio of
30
Nov
A conducting sphere of radius 10 cm is charged with 10 μC. Another uncharged sphere of radius 20 cm is allowed to touch it for some time. After that if the spheres are separated, then surface density of charges on the spheres will be in the ratio of A conducting sphere of radius 10 cm [...]
Two isolated charged metallic spheres of radii r1 and r2 having charges q1 and q2 respectively are connected to each other, then there is
30
Nov
Two isolated charged metallic spheres of radii r1 and r2 having charges q1 and q2 respectively are connected to each other, then there is then there is Two isolated charged metallic spheres of radii r1 and r2 having charges q1 and q2 respectively are connected to each other November 30, 2020 Category: Cengage NEET by [...]
A 2μF capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch S is turned to position 2 is
30
Nov
A 2μF capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch S is turned to position 2 is A 2μF capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch S is turned to position 2 is November [...]
A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is connected to another battery and is charge to a potential difference 2V. The charging battery is now disconnected and the capacitors are connected in parallel to each other in such a way that the positive terminal of one is connected to the negative terminal of the other. The final energy of the configuration is
30
Nov
A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is connected to another battery and is charge to a potential difference 2V. The charging battery is now disconnected and the capacitors are connected in parallel to each other in [...]