Lab 2 - Experiment 2 Resistors in Series and Parallel...

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Experiment 2 Resistors in Series and Parallel Connections (1) Purpose: The purpose of the lab is to investigate the relationship between current and voltage in Ohmic materials and the characteristics of resistors in series and parallel. In addition, the purpose of the lab is to learn how to use DMM (digital multimeter) to measure resistance, dc voltage, and dc current. Equipment: The experiment requires four resistors, digital multimeters (DMM), DC power sup- ply (HY152A), 4 light bulbs with sockets, and banana connectors. Theory: When a voltage or potential difference (V) is applied across a conductor, the current (I) in the material is found to be proportional to the voltage. The Resistance (R) is defined as the ra- tio of the applied voltage and the resulting current. This is given as R=. Resistors are connected in series if they are connected from head to tail. In a series, the current stays the same,. However, the voltage and resistance drop. This leads us to the formula: R s =R 1 +R 2.

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