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Part 1: Connecting bulbs in series 1.5 V 1. Create a circuit using two batteries, one LED, a switch, and any necessary wire modules. (Include a resistor) 1.5 V 2. Close the switch and observe the brightness of the bulb. 3. Using a multimeter, get the vDge and the cht passing through the bulb. 4. Record the data in table 1. 5. Calculate for the resistance and the electric power consumed by each bulb/load as well as for the whole circuit. (Use the formula for power and resistance from Ohm's Law) 6. Do the steps 1-5 two more times while adding an additional light bulb/load each time. (Add an additional LED (in series) every trial) 7. Fill out the computed values using the formula for power and Ohm's law. Use the theoretical values of voltage and current.
Use Volt met er to measure voltage To measure the voltage connect the positive probe to the + side of the LED (round side) and negative probe to the - side of the LED (flat side) -
Use Ammet er to measure current To measure the current, remove the wire that connects the resistor and the 1.5 V battery. Connect the positive probe of the ammet er to the - side of the battery and the negative probe to the leg of the resistor. You can watch the breadboarding demo on how to measure current in the circuit.
Table 1. Load Recorded Data Computed Values No. Type V A Ω w V A Ω W CIRCUIT 1 %Error= Total: Total: CIRCUIT 2 %Error= Total: Total: CIRCUIT 3 %Error Total: Total
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