total voltage drop across circuit= 44 %Īdd a multimeter between the diodes and record the current. Total voltage across resistor and two diodes 4.89V Voltage across diode #1 0 V Voltage across diode #2 0 VĬlose the switch. Resistance of the resistor: Formula: _V/I=R_ Verify the current with the multimeter.Ĭurrent (multimeter) ma = 20.7 milliamps. Use the voltage (V) for the resistor in the previous step and the current (I) from the power supply to determine the resistance of the resistor.
Record the current delivered by the power supply. How does the voltage across the resistor change during the first few seconds the LED is turned on? It shoots up to just below one Voltage across diode (switch closed) 1.97 Volts Voltage across resistor (switch closed) 6.99 Volts Leave the button pushed and note how the resistor voltage changes. Record the measurements in the space provided below. Measure the voltage drop across the diode and across the resistor. Voltage across diode (with switch open) 0 VĬlose the switch so the diode turns on. Voltage across resistor (with switch open) 1 V Record the measurements in the space provided below.b With the switch open, Measure the voltage across the power supply, across the 330 ohm resistor, and across the diode. You are to interpret the schematic diagram to create a circuit. Construct the simple circuit displayed below using a 330 ohm resistor, diode, and a switch in the open position.
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