Phy Ohm’s Law and Capacitance PDF

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Ohm’s Law and Capacitance 1. Introduction a. Ohm’s law is that current through a resistor is proportional to the voltage across resistor. Even though it is not universally applicable, Ohm’s Law are circuit components. This is relationship among current, voltage, and resistance.

2. Procedures a. computer with Pasco 850 interface, Capstone and Excel software, DC power supply, current and voltage probes, wires, light bulb, 10 µF capacitor, various resistors, two D cells, single-pole double-throw switch (SPDT) b. Procedures i. Setup up the board like pictures. ii. Conne c tb l u ec ur r e ntp r ob ei nt oa p a s por ti np ut .

DC power supply

resistor

A current probe

V voltage probe

Figure 1. Circuit diagram for experiment setup. The DC power supply, current probe (ammeter), and resistance box are in ser e s i s t o ri ns e r i e swi t he a c h iii. Wi t ht h epo we rs upp l yo ff, c on ne c tt hep o we r . 6 8 Ω r o t h e r . Con n e c tt h ev o l t a g ep or bei np a r a l l e la c r o s st h er e s i s t o r . iv. Tu r no nt h ec o n t r o lpo we rs u p p l yt o0V. Sl o wl yi n c r e a s et hev o l t a g et o5 . 0V v. Col l e c tt h eda t a vi. Ke e ps a mp l ea f t e r0 . 5 Vi n c r e me ntf o r6 8a nd6Vl i g h tb ul b . vii. Forpa r t2 , c a pa c i t o r s . 1. Us es wi t c hSW2a n ds e t3 Vpo s i t i on .

Wes e tu pt hed e vi c el i k epi c t u r e sb e l o w

3. Data a. For lineal graph

b. For quadratic c. For part 2

Question1 Slope represent the resistance of the component. If slope is sharp it means high resistnace and slope is less than 1, means low resistance. Question2 Yes, it does follow ohm’s law. Because it is linear and it is equal to 1. Question3 At low voltage, the graph was more curved. But it became linear as the voltage gets higher. It shows that resistance increased as the voltage increased. The bulb gets brighter, it means resistance increase with temperatures. Question 4 Data is linear because it equals 1, and it is lay by Ohms. Question 5 Question 6 The shape is changing exponentially, natural graph and Inverse exponential graph too. Question 11 If the graphs of my discharge data would be linear.

4. Conclusion a. This lab was that identify how Ohms law are working. Our data was enough and had a good data. Graph was good. And Natural exponential and Inverse Exponential graph was enough to use....