PYQSidePowered byPrepblink ExamsMy practice

Electrostatic Potential and Capacitance

JEE Main 2024 (Online) 8th April Morning ShiftMCQEasy📈 Topic in 9% papers+4−1
Ques. 1JEE Main 2024, 8 April (Morning Shift)

Two charged conducting spheres of radii a and b are connected to each other by a conducting wire. The ratio of charges of the two spheres respectively is:

  1. ab
  2. ba
  3. ab
  4. ab

Answer

(3) ab

Solution

spheres joined by a wire ⇒ both are at the same potential

kq1a = kq2b

q1q2 = ab

Answer: (3)

Keep practising — Electrostatic Potential and Capacitance

Ques. 2JEE Main 2024, 8 April (Evening Shift)

A capacitor has air as dielectric medium and two conducting plates of area 12 cm2 and they are 0.6 cm apart. When a slab of dielectric having area 12 cm2 and 0.6 cm thickness is inserted between the plates, one of the conducting plates has to be moved by 0.2 cm to keep the capacitance same as in previous case. The dielectric constant of the slab is : (Given 0 = 8.834 10-12 F/m)

  1. 1.50
  2. 0.66
  3. 1.33
  4. 1
Ques. 3JEE Main 2024, 6 April (Evening Shift)

A capacitor of 10 capacitance whose plates are separated by 10 mm through air and each plate has area 4 cm2 is now filled equally with two dielectric media of K1 = 2, K2 = 3 respectively as shown in figure. If new force between the plates is 8 N. The supply voltage is V. [figure]

Ques. 4JEE Main 2024, 5 April (Morning Shift)

Three capacitors of capacitances 25 , 30 and 45 are connected in parallel to a supply of 100 V. Energy stored in the above combination is E. When these capacitors are connected in series to the same supply, the stored energy is 9xE. The value of x is .

Ques. 5JEE Main 2024, 4 April (Evening Shift)

A parallel plate capacitor of capacitance 12.5 pF is charged by a battery connected between its plates to potential difference of 12.0 V. The battery is now disconnected and a dielectric slab ( r = 6) is inserted between the plates. The change in its potential energy after inserting the dielectric slab is 10-12 J.

Ques. 6JEE Main 2024, 1 February (Morning Shift)

Two identical capacitors have same capacitance C. One of them is charged to the potential V and other to the potential 2V. The negative ends of both are connected together. When the positive ends are also joined together, the decrease in energy of the combined system is :

  1. 14CV2
  2. 34CV2
  3. 12CV2
  4. 2CV2
Ques. 7JEE Main 2024, 1 February (Evening Shift)

A galvanometer (G) of 2 resistance is connected in the given circuit. The ratio of charge stored in C1 and C2 is : [figure]

  1. 1
  2. 23
  3. 32
  4. 12
Ques. 8JEE Main 2024, 31 January (Morning Shift)

A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of thickness 2 mm, while keeping the battery connections intact, the capacitor draws 25\% more charge from the battery than before. The dielectric constant of the sheet is .

Ques. 9JEE Main 2024, 31 January (Evening Shift)

The distance between charges +q and -q is 2l and between +2q and -2q is 4l. The electrostatic potential at point P at a distance r from center O is - [ qlr2 ] 109 V, where the value of is . (Use 14 0=9 109 Nm2C-2) [figure]

Ques. 10JEE Main 2024, 30 January (Morning Shift)

The electrostatic potential due to an electric dipole at a distance 'r' varies as :

  1. 1r3
  2. 1r
  3. 1r2
  4. r
Ques. 11JEE Main 2024, 30 January (Morning Shift)

A capacitor of capacitance C and potential V has energy E. It is connected to another capacitor of capacitance 2C and potential 2V. Then the loss of energy is x3E, where x is .

All Electrostatic Potential and Capacitance PYQs →

PDFDownload Electrostatic Potential and Capacitance PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All JEE Main Physics chapters