Internal Resistance Of Battery
Measuring the effect and value of internal resistance in a DC circuit.
Part of the course: Electricity & Circuits I — DC Fundamentals
Mission
Measuring the effect and the value of the internal resistance in a DC circuit.
Variables
What you change
- Resistance value
What you measure
- Voltage drop
What you keep constant
- Wire length
- Wire cross section
- Battery voltage value
- Temperature of wire
Equations
R_i = Internal resistance of battery (ohm)
R = Load resistance (ohm)
V_Bat ≈ 6 Volts
V_R = Voltage drop on load resistance (V)
R_i = \frac{R(V_Bat-V_R)}{V_R}
What You'll Need
- Breadboard 400 Tie Point
- Arduino Uno
- I2C LCD
- 25V Voltage Sensor Module
- 6V Battery Pack, 4x AA
- Resistor
How You Can Run It
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