Question: How long does it take a capacitor to charge and to di scharge? Part P-

Question

Question: How long does it take a capacitor to charge and to di scharge? Part P- 1: The Voltmeter A voltmeter is a device that measures To measure the potential difference (AV) between two points, the two leads of the voltmeter must be placed at these two points on either side of the device you are trying to meas without disconnecting the circuit. A voltmeter is always connected in parallel like this: the potential difference (AV),between two points in a circuit. Typically this is ure measured in volts. 1. Why would you need to measure the voltage across the resistor as shown in Figure P - 1? Explain your answer. Figure P-1: Potential difference (AV) is always measured across a circuit element. That is the voltmeter is parallel to the circuit element What could happen in the lab if the capacitor where not fully discharged in this laboratory? Explain your answer. (Stating that you would obtain bad data is not an acceptable answer.) 2. Series and Parallel Circuits (Capacitors)

Explanation / Answer

if volt meter is connected in parallel then the voltage drop across at resistor can measure exactly. suppose if volt metere is connected in series the potential is divided at voltmeter and resistor and you cant measure the exact potential at resistor.

when we connect in parallel the net resistance is always less than lowest among them so total curent will pass through resistor only hence we can measure exact drop potential at resistor.

discharging of capacitor not be done in less time. capacitor will discharge exponentially. so to reduce to zero it takes lot of time. If capacitor is not discharged it act as battery and stores the electrical energy.

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