NEET-XII-Physics
02: Electrostatic Potential And Capacitance
- #7Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel.
(a) What is the total capacitance of the combination?
(b) Determine the charge on each capacitor if the combination is connected to a 100 V supply.
(a) What is the total capacitance of the combination?
(b) Determine the charge on each capacitor if the combination is connected to a 100 V supply.Ans : null (a) Capacitances of the given capacitors are
For the parallel combination of the capacitors, equivalent capacitor
is given by the algebraic sum,
Therefore, total capacitance of the combination is 9 pF.
(b) Supply voltage, V = 100 V
The voltage through all the three capacitors is same = V = 100 V
Charge on a capacitor of capacitance C and potential difference V is given by the relation,
q = VC ... (i)
For C = 2 pF,
For C = 3 pF,
For C = 4 pF,
(a) Capacitances of the given capacitors are
For the parallel combination of the capacitors, equivalent capacitoris given by the algebraic sum,
Therefore, total capacitance of the combination is 9 pF.
(b) Supply voltage, V = 100 V
The voltage through all the three capacitors is same = V = 100 V
Charge on a capacitor of capacitance C and potential difference V is given by the relation,
q = VC ... (i)
For C = 2 pF,
For C = 3 pF,
For C = 4 pF,
- #7-aWhat is the total capacitance of the combination?Ans : Capacitances of the given capacitors are
For the parallel combination of the capacitors, equivalent capacitoris given by the algebraic sum,
Therefore, total capacitance of the combination is 9 pF.
- #7-bDetermine the charge on each capacitor if the combination is connected to a 100 V supply.Ans : Supply voltage, V = 100 V
The voltage through all the three capacitors is same = V = 100 V
Charge on a capacitor of capacitance C and potential difference V is given by the relation,
q = VC ... (i)
For C = 2 pF,
For C = 3 pF,
For C = 4 pF,