Discharging a capacitor via resistors with Cobra SMARTsense  ![]()
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Unknown Principle
In this experiment, voltage curves during the discharge process of a capacitor in an RC circuit are measured. Different resistors are used to investigate the relationship between the half-life and the respective resistance values. Tasks - Record the discharge curve of three different capacitors as a function of time.
- Determine the half-life of the capacitor.
- Identify the correlation between resistance and half-life.
Learning objectives
Students learn to understand the discharge process of a capacitor in an RC circuit and recognize its dependence on different resistance values. They also determine the relationship between the half-life of the discharge process and the resistance. Benefits - Simple setup in just a few minutes.
- High-resolution data acquisition (up to 10 kHz).
- Improvement of digital media literacy.
- Safe (RiSU-compliant) power supply unit.
Scope of delivery |
Plug-in board, for 4 mm plugs
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06033-00
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1
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Wire building block, housing G1
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39120-00
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3
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PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A
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13506-93
|
1
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on-off switch, G1
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39139-00
|
1
| |
Resistor 1 kOhm, 1W, G1
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39104-19
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1
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Connecting cable, 32 A, red, various lengths
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07360-01
|
1
| |
Connecting cable, 32 A, blue, various lengths
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07360-04
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1
| |
Connecting cable, 32 A, red, various lengths
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07361-01
|
1
| |
Connecting cable, 32 A, blue, various lengths
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07361-04
|
1
| |
measureAPP - the free measurement software for all devices and operating systems
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14581-61
|
1
| |
Capacitor 1,0 µF, G1
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39105-51
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1
| |
Resistor 2.2 kOhm, 1W, G1
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39104-23
|
1
| |
Resistor 470 Ohm, 1W, G1
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39104-15
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1
|
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Service
