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K5-31. Ohm's Law
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K5-31. Ohm's Law
Purpose
To demonstrate V=IR.
Equipment
Ohm's law demonstrator, overhead projector.
Images
Descritption
This setup, including variable voltage power supply, voltmeter, ammeter, and plug for resistor, sits on an overhead projector; the circuit is clearly visible. Changing the voltage produces an appropriate change of current. Several resistors can be used.
References
Steven A. Waltner and Thomas A. Lehman, When is Ohm's Law Valid?, TPT 31, 102-103 (1993). J. D. Jackson, Surface charges on circuit wires and resistors play three roles, AJP 64, 855-870 (1996).
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See pagesk1. forces on moving charges
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See pagesk2. electromagnetic induction
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See pagesk3. transformers
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See pagesk4. motors & generators
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See pagesk5. electrical properties of matter
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See pagesk6. electric circuits & instruments
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See pagesk7. rlc circuits
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See pagesk8. electromagnetic waves
-
See pagesk1. forces on moving charges
-
See pagesk2. electromagnetic induction
-
See pagesk3. transformers
-
See pagesk4. motors & generators
-
See pagesk5. electrical properties of matter
-
See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves
Physics Lab Demos