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Use the Analog Discovery™ and a digital multimeter to explore a fundamental equation used in electric circuit analysis and design: Ohm's Law.

Apply a time-varying voltage to a resistor using the Analog Discovery™ waveform generator. We will use the Analog Discovery oscilloscope to measure the resulting current, and plot the voltage as a function of current. The resulting plot will show the resistor's voltage-current characteristic, or I-V curve.

When resistors are connected in series, the combination has an equivalent resistance that is the sum of the resistances of the individual resistors. This property can be useful in creating desired resistance values from a limited selection of fixed resistors. The user will create a 9 kΩ resistor from the resistors available in the Digilent's® Analog Parts Kit.

If the total voltage difference across a set of series resistors is known, the voltage differences across any individual resistor can be determined by the concept of voltage division.

When resistors are connected in parallel, the combination has an equivalent conductance that is the sum of the conductance of the individual resistors. The user will create a 5 kΩ resistor from the resistors available in Digilent's® Analog Parts Kit.