F. Expt. with capacitors P.25 1. Capacitors and charge (a) Charging and discharging 0-6V mA A B electrolytic capacitor B x Q charging defl. Q I battery.

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Presentation transcript:

F. Expt. with capacitors P Capacitors and charge (a) Charging and discharging 0-6V mA A B electrolytic capacitor B x Q charging defl. Q I battery

F. Expt. with capacitors P Capacitors and charge (a) Charging and discharging 0-6V mA A B B x Q charging defl. Q A x discharging Conclusion : charge stored up during charging charge stored up during discharging I

F. Expt. with capacitors P Capacitors and charge Q = C V Q V (C = const. ) Q C (V = const. ) Expt (b) Expt (c)

F. Expt. with capacitors P Capacitors and charge (b) Q and V (Q V ) 1.5V mA A B 1 unit Q V deflection 1.5V 3V 4.5V 6V 1 unit 2 unit 3 unit 4 unit Q Conclusion : Q V ( C= const. ) 3V 4.5V 6V 2 unit 3 unit 4 unit defl. Q

F. Expt. with capacitors P Capacitors and charge (c) Q and C (Q C ) mA A B 1 unit Q C deflection 1 unit 2 unit 3 unit Q Conclusion : Q C ( V= const. ) 6V 2 unit 3 unit defl. Q 100  F 300  F 200  F 100  F200  F 300  F

(d) R and charging current mA A B 6V small R CRO small R chargingdischarging large R Q I I max I=0 fully charged V = I R

(d) R and charging current mA A B 6V small R CRO small R chargingdischarging large R Q I

(d) R and charging current mA A B 6V large R CRO small R chargingdischarging large R I Q

(d) R and charging current mA A B 6V large R CRO small R chargingdischarging large R I Q Conclusion : … R is increased, … t will be lengthened.