NEET-XII-Physics
02: Electrostatic Potential And Capacitance
- #9Explain what would happen if in the capacitor given in Exercise 2.8, a 3 mm thick mica sheet (of dielectric constant = 6) were inserted between the plates,
(a) While the voltage supply remained connected.
(b) After the supply was disconnected.Ans : null (a) Dielectric constant of the mica sheet, k = 6
Initial capacitance, C = 1.771 × 10-11 F
Supply voltage, V = 100 V
Potential across the plates remains 100 V.
(b) Dielectric constant, k = 6
Initial capacitance, C = 1.771 × 10-11 F
If supply voltage is removed, then there will be no effect on the amount of charge in the plates.
Charge = 1.771 × 10-9 C
Potential across the plates is given by,
- #9-aWhile the voltage supply remained connected.Ans : Dielectric constant of the mica sheet, k = 6
Initial capacitance, C = 1.771 × 10-11 F
Supply voltage, V = 100 V
Potential across the plates remains 100 V.
- #9-bAfter the supply was disconnected.Ans : Dielectric constant, k = 6
Initial capacitance, C = 1.771 × 10-11 F
If supply voltage is removed, then there will be no effect on the amount of charge in the plates.
Charge = 1.771 × 10-9 C
Potential across the plates is given by,