Q. For a charged parallel plate capacitor shown in the figure, the force experienced by an alpha particle
- maximum at C
- zero at A
- same at B and C
- zero at C
Q. Capacitors are used in electrical circuits where appliances need rapid:-
Q. A capacitor C1=1.0μF is charged up to a voltage V=60V by connecting it to a battery B through the switch (1). Now C1 is disconnected from battery and connected to a circuit consisting of two uncharged capacitors C2=3.0μF and C3=6.0μF through a switch (2) as shown in the figure. The sum of final charges on C2 and C3 is:
Q. A parallel-plate air capacitor of capacitance 245pF has a charge of magnitude 0.148μC on each plate. The plates are 0.328mm apart. What is the area of each plate?
Q. In the circuit shown in figure C=6 μF. The charge stored in capacitor of capacity C is?
- 90 μ C
- 40 μ C
- 60 μ C
Q. The charge on the capacitor in steady state is :-
- 2 μC
- 4 μC
- 6 μC
- 8 μC
Q. Write the application of capacitors.
Q. Three conducting bodies A(solid sphere), B(hollow sphere) and C(hollow sphere with thickness R) are arranged as shown in the figure. A charge q is given to the inner sphere. Match the statements from List I with the values in List II and select the correct answer using the code given below the lists.
|(A)||When S1, S2 both are open, capacity of the system is C1, then C1 is||(p)||16πϵ0R|
|(B)||When S1 is closed but S2 is open, capacity is C2, then C2 is||(q)||16πϵ0R3|
|(C)||When S2 is closed but S1 is opened, capacity is C3, then C3 is||(r)||48πϵ0R5|
|(D)||When both S1 and S2 are closed, capacity is C4, then C4 is||(s)||48πϵ0R11|
Q. The unit to measure capacitance of a capacitor is coulomb.
Q. A capacitor having capacitance 1 μF with air, is filled with two dielectrics as shown. How many times capacitance will increase?