Electrostatics (NEET Physics): Questions 77 - 80 of 107
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Question number: 77
» Electrostatics » Electrostatic Potential Energy
Four charges + q, -q, + q and -q are put together on four corners of a square as shown in figure. The net electrostatic energy of the system is,
|d.||All of the above|
Question number: 78
» Electrostatics » Electric Field Due to a Point Charge
Electric field at point P is given as
Question number: 79
» Electrostatics » Capacitors
If the distance between parallel plates of a capacitor is halved and dielectric constant is made three times, then the capacitance becomes 6 times.
Capacity of the capacitor does not depend upon the nature of the material of plates.
|a.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
|b.||Both Ꭺ and Ꭱ are false|
|c.||Ꭺ is false but Ꭱ is true|
|d.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
Question number: 80
» Electrostatics » Electric Potential
Identical point charges, each having +q charge, are fixed at each of the points x = x 0, x = 3x 0, x = 5x 0 ……… infinite, on the x-axis and an identical point charges, each having -q charge, are fixed at each of the points x = 2x 0, x = 4x 0, x = 6x 0 ……. infinite. Here x 0 is a positive constant. Potential at the origin due to the above system of charges is,