Справочник Пользователя для PASCO Specialty & Mfg. AC/DC Electronics Laboratory EM-8656
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012-05892A
AC/DC Electronics Laboratory
®
EQUIPMENT NEEDED:
– AC/DC Electronics Lab Board: Wire Leads
– (2) D-cell Batteries
– Graph Paper
– (2) D-cell Batteries
– Graph Paper
Purpose
The purpose of this lab is to determine how light bulbs behave in different circuit arrangements.
Different ways of connecting two batteries will also be investigated.
Different ways of connecting two batteries will also be investigated.
Procedure
PART A
➤ NOTE: Due to variations from bulb to bulb, the brightness of one bulb may be substantially
different from the brightness of another bulb in “identical” situations.
➀
Use two pieces of wire to connect a single light bulb to one of the D-cells in such a way that the
light will glow. Include a “switch” to turn the light on and off, preventing it from being on
continuously. (You should have completed this step in Experiment 1. If that is the case, review
what you did then. If not, continue with this step.)
light will glow. Include a “switch” to turn the light on and off, preventing it from being on
continuously. (You should have completed this step in Experiment 1. If that is the case, review
what you did then. If not, continue with this step.)
➁
Use additional wires as needed to connect a second light into the circuit in such a way that it is
also lighted. Discuss your plans with your lab partner before you begin. Once you have
achieved success, sketch the connections that you made in the form of a circuit diagram using
standard symbols. Annotate your circuit diagram by making appropriate notes to the side
indicating what happened with that particular circuit.
also lighted. Discuss your plans with your lab partner before you begin. Once you have
achieved success, sketch the connections that you made in the form of a circuit diagram using
standard symbols. Annotate your circuit diagram by making appropriate notes to the side
indicating what happened with that particular circuit.
➤ NOTE: Is your original light the same brightness, or was it brighter or dimmer than it was
during step 1? Can you explain any differences in the brightness, or why it is the same?
➂
If one of the light bulbs is unscrewed, does the other bulb go out or does it stay on? Why or
why not?
why not?
➃
Design a circuit that will allow you to light all three lights, with each one being equally bright.
Draw the circuit diagram once you have been successful. If you could characterize the circuit
as being a series or parallel circuit, which would it be? What happens if you unscrew one of
the bulbs? Explain.
Draw the circuit diagram once you have been successful. If you could characterize the circuit
as being a series or parallel circuit, which would it be? What happens if you unscrew one of
the bulbs? Explain.
➄
Design another circuit which will also light all three bulbs, but with the bulbs all being equally
bright, even though they may be brighter or dimmer than in step 4. Try it. When you are
successful, draw the circuit diagram. What happens if you unscrew one of the bulbs? Explain.
bright, even though they may be brighter or dimmer than in step 4. Try it. When you are
successful, draw the circuit diagram. What happens if you unscrew one of the bulbs? Explain.
➅
Devise a circuit which will light two bulbs at the same intensity, but the third at a different
intensity. Try it. When successful, draw the circuit diagram. What happens if you unscrew
one of the bulbs? Explain.
intensity. Try it. When successful, draw the circuit diagram. What happens if you unscrew
one of the bulbs? Explain.
➤ NOTE: Are there any generalizations that you can state about different connections to a
set of lights?
Experiment 2: Lights in Circuits