# Lab 3 - Electrical Circuits Currents(Lab 3 Apparatus...

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Electrical Circuits – Currents (Lab 3) Apparatus Multimeter Variable resistance box Circuit board DC power supply Introduction This experiment will help to familiarize the use of electrical hook-ups and the distribution of currents in simple circuits. We will attempt to visualize the flow of charge in the various parts of the circuit and to understand why the meters must be connected as they are, in order to make a particular measurement. Steps Turn the DC power supply ON. Set the power supply to the 0-35V/0-0.85A range. Rotate voltage and current adjust knobs fully counterclockwise Press the CC Set button and rotate the adjust knob (at the same time) counterclockwise until the AMPS display reads 0.15. Rotate the voltage adjust knob till reads 06.0 volts Currents in Resistors Series With switch open, connect ammeter, R1 (75 ohms on the resistance box), R2 (50 ohm resistor), and the ON/OFF switch in series with the power supply. The multimeter should be set to DC and to a range to measure the highest current. Record all values of R1, R2, and Ix for all steps!

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Lab 3 - Electrical Circuits Currents(Lab 3 Apparatus...

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