Section 1: Electricity and Circuits
Section 1 - Activity 1
Question: What will happen to bulbs 1 and 2 when you disconnect the wires at various points?
Observations and Conclusion
Point Bulb 1 Bulb 2
A Unlit Unlit B Unlit Unlit C Unlit Unlit D Unlit Unlit E Unlit Unlit F Unlit Unlit |
In a series circuit, when you break the circuit at any location, it will break it, and no current will flow through it at all. The position end of the power source (the battery) must connect to the negative end in order for it to work.
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Section 1 - Worksheet 1
For this worksheet we were given different circuits and asked to determine which bulbs light up, as well as draw the path of conduction for each circuit.
#1 - In the following circuit, which bulb lights first?
(A) Bulb A (B) Bulb B (C) Bulb C (D) They all light at the same time (E) A and C light first, B lights after them |
Correct answer: (D) - they all light up at the same time, since current flows continuously
#2-4 - For the following 3 circuits, state whether Bulb A lights, Bulb B lights, Both bulbs light, or neither bulb lights:
#2 - (D) is the correct answer. Neither bulbs will light, since the circuit plugs into the positive side of the battery twice, so no current will ever flow through the circuit
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#3 - (A) is the correct answer. Bulb A is part of a successfully connected series circuit, but Bulb B is not. It is outside of it, and therefore no current will flow to it.
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#4 - (C) is the correct answer. Both Bulb A and B are part of a successfully connected series circuit, so current will flow equally to both of them.
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Section 1 - Activity 2
Question: What are the essential components and configurations needed to make a bulb light?
For this activity, we were given one cell, one bulb, and one wire. We were to record 2 unsuccessful attempts, and 2 successful ones. Also, we were to determine if we could light more than one bulb at once given the same equipment (with 2 bulbs).
Successful Attempts |
Unsuccessful Attempts |