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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What improvements can be made for this experiment? |
You can plot a graph of V against t which will give an exponential decay curve
The time constant can be found from this by finding t when the voltage is approximately 37% of the voltage of the battery Digital voltmeter over analogue as uncertainty is reduced |
3 points |
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What are the safety aspect of this experiment? |
Ensure the capacitor is connected with the correct polarity and that is voltage rating exceeds that of the battery to prevent it from exploding and releasing harmful chemicals |
1 point |
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What is the control variable for this experiment? |
Capacitance of the capacitor being used Resistance value of the fixed resistor being used |
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Describe the graph of this experiment for V against t |
Exponential Decay Curve
Time constant can be found from this my finding t when the voltage is 37% of the EMF of the battery |
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Describe the graph of this experiment for log V against t |
Mean log V against t
Straight line graph with negative gradient this shows decay of voltage across capacitors explanation
Gradient is equal to -1/RC
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3 points |
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Describe the calculation made for this experiment |
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y=mx+c |
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What is the improvement that can be made for this experiment? |
What time constant can be found from the exponential growth curve by finding t when the is approximately 63% of the EMF |
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What is the safety aspect for this experiment? |
Ensure the capacitor is connected with the correct polarity and that is voltage rating exceeds that of the battery to prevent it from exploding and releasing harmful chemicals |
1 point |
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What are the control variable for the experiment? |
Capacitance of the capacitor being used Resistance of fixed resistor being used |
2 points |
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Describe the graph for this experiment |
V against t
Line will show an exponential growth Curve
V = Vo(1-e^t/RC ) |
3 points |
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Circuit Diagram Charging/Discharging |
Discharging |
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Circuit Diagram Charging/Discharging |
Charging |
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