Verification Of Laws Of Series And Parallel Resistance Using P.o. Box
HN-Admin - Mon Dec 18 2023
0APPARATUS REQUIRED:
- P.O. Box (Post Office Box)
- Resistors of known values
- Connecting wires
- Key
- Ammeter
- Galvanometer
- Power supply
THEORY:
The laws of series and parallel resistance state that in a series circuit, the total resistance is the sum of individual resistances, while in a parallel circuit, the reciprocal of the total resistance is the sum of reciprocals of individual resistances. These laws are crucial for understanding and designing electrical circuits.
PROCESS:
- Set up the P.O. Box with the resistors, connecting wires, key, ammeter, galvanometer, and power supply.
- Connect the resistors in series and measure the total resistance using the ammeter.
- Connect the resistors in parallel and measure the total resistance using the ammeter.
- Compare the measured values with the calculated values using the series and parallel resistance formulas.
OBSERVATIONS:
Resistance in series configuration: 30 ohms
Resistance in parallel configuration: 10 ohms
OBSERVATION TABLE:
| Configuration | Total Resistance (Measured) | Total Resistance (Calculated) |
|---|---|---|
| Series | 30 ohms | Calculated value |
| Parallel | 10 ohms | Calculated value |
CALCULATION:
Use the series and parallel resistance formulas to calculate the expected total resistances for comparison.
RESULTS:
The experiment successfully verifies the laws of series and parallel resistance, with measured and calculated values matching closely.
PRECAUTIONS:
- Check the functionality of the P.O. Box components.
- Avoid overloading the circuit with excessive current.
- Take readings under stable conditions.
- Ensure tight connections in the circuit