12. A capacitor of capacitance C = 500uF is charged to a voltage of 900 V and is then discharged through a resistance R

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12 A Capacitor Of Capacitance C 500uf Is Charged To A Voltage Of 900 V And Is Then Discharged Through A Resistance R 1 (48.71 KiB) Viewed 21 times

12. A capacitor of capacitance C = 500uF is charged to a voltage of 900 V and is then discharged through a resistance R = 200 kQ2 when a switch is closed. (i) Find the initial charge stored in the capacitor. (ii) Find the initial discharge current when the switch is closed. (iii) Find the voltage across the capacitor in a time t = 25 s after the start of discharge. (iv) Find the time constant of this capacitor resistor network combination. 13. A thin non-conducting rod is bent to form an arc of a circle of radius r and subtends an angle 0, at the centre of the circle. If a total charge q is spread uniformly along the rod, find the electric field at the center of the circle.