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Electrostatics
Ohms law
Series
Parallel
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100
What are the parts of an atom that are -positively charged? Negative?
What is nucleus is positive electrons negative
100
If you increase the resistance in a circuit, the current will
Decrease because V= I *R
100
What is the effect on current when resistance is increased in a series circuit?
Total R increases, then Total Current decreases, although it is the same on each bulb
100
Draw a schematic for a parallel circuit that includes a battery and two resistors. Label all parts of the schematic.
Picture should be correct... examples here www.physicsclassroom.com/class/circuits/Lesson-4/Parallel-Circuits
100
Draw a Circuit with light bulbs in series AND parallel (AKA a combination circuit....
Picture needs to be correct....data:image/png;base64,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
200
What is meant by saying charge is ?conserved?
Charge will not be created or ?destroyed, just transformed
200
When the voltage across ?the end of a wire is ?doubled, what effect does ?this have on current?
Doubled
200
In a series circuit with two bulbs connected, if the current through one lamp is 1A, what is the other?
Same! 1A
200
In a circuit consisting of two bulbs ?connected in parallel, if there is a 6 volt drop ?across one bulb, what is across the other?
Same! 6 Volts
200
Which has greater resistance, a thick wire or a thin wire of the same length......
Thin wire has more resistance, harder to flow in. This is Ohm's Law
300
Why do electrons, rather than ?protons make up the flow of ?charge in a metal wire?
Proton's are tightly bound in nucleus and can not flow
300
Your tutor tells you that an Amp and a volt really measure the same thing and the different terms only serve to simplify the same idea...Why should you get a new tutor?
Amps measures current and volts measures electric potential. silly tutor.
300
As more resistors are added to a circuit in series, the electrical resistance of the circuit....
Increases
300
A 12 Volt battery is hooked up to two resistors in parallel. R1 has 16 ohms and r2 and 24 ohms. Find the current in the entire circuit..... reminder Itotal = I1+ I2 in parallel
V = I R Rtotal... 9.6 ohms So Current is 1.3 A
300
Which draws more current, a 40 Watt bulb or a 100 Watt bulb? NOTE = POWER is WATTS and P=V*I
What is the 100 W bulb.... P=v*I so more I is more more P
400
When combing your hair, you transfer ?_____________ from your hair onto the comb. Is your hair then positively or negatively ?charged? What might you see happen? (Picture ?required)
Electrons. Hair will have an excess of positives it may repel from itself
400
You have likely been warned to avoid contact with electrical appliances or even electrical outlets when your hands are wet. Such contact is more dangerous when your hands are wet (vs. dry) because wet hands cause ____
the current would thus be increased. Touching an outlet with wet hands increases the risk of charge flowing through you and causing electrical shock or even electrocution.
400
Use your understanding of equivalent resistance to complete the following statements: a. Two 3-Ω resistors placed in series would provide a resistance that is equivalent to one _____-Ω resistor. b. Three 3-Ω resistors placed in series would provide a resistance that is equivalent to one _____-Ω resistor. c. Three 5-Ω resistors placed in series would provide a resistance that is equivalent to one _____-Ω resistor.
a. Two 3-Ω resistors placed in series would provide a resistance which is equivalent to one 6-Ω resistor. b. Three 3-Ω resistors placed in series would provide a resistance which is equivalent to one 9-Ω resistor. c. Three 5-Ω resistors placed in series would provide a resistance which is equivalent to one 15-Ω resistor.
400
A Battery and two resistors are hooked up in parallel..... R1 and R2. Find the resistance of R2.... R1 is using 5v and has 2amps of current. R2 has .5 amps.
10 ohms
400
Why is it better to have thick wires carry large amounts of current?
Less Resistance so they won't OVERHEAT!
500
If five thousand ?billion billion freely moving electrons in a ?penny repel each other, why don't they fly ?out of the penny?
They are attracted to the ?nucleus in the 5 billion billion protons
500
Use the Ohm's law equation to provide numerical answers to the following questions: a. An electrical device with a resistance of 3.0 Ω will allow a current of 4.0 amps to flow through it if a voltage drop of ________ Volts is impressed across the device. b. When a voltage of 120 V is impressed across an electric heater, a current of 10.0 amps will flow through the heater if the resistance is ________ Ω. c. A flashlight that is powered by 3 Volts and uses a bulb with a resistance of 60 Ω will have a current of ________ Amps.
Use the equation V = I • R to solve for the unknown quantity. a. 3.0 Ω b. 120 V c. Will have a current of 0.05 Amps
500
Draw a Series circuit with two resistors, 10 ohms and 5 ohms in series. The Current in the 10 ohm resistor is .667amps. Find the Total Voltage in the circuit.
Rtotal is 15 ohms, I total is .667 amps since current is same in series.... V= I*R so V is 10Volts
500
As more and more resistors are added in parallel to a circuit, the equivalent resistance of the circuit ____________ and the total current of the circuit ____________
As more and more resistors are added in parallel to a circuit, the equivalent resistance of the circuit decreases and the total current of the circuit increases.
500
How much Current will kill you? .001 amps .1amps 1 amps 10amps
For example, 1/10 of an ampere (amp) of electricity going through the body for just 2 seconds is enough to cause death. The amount of internal current a person can withstand and still be able to control the muscles of the arm and hand can be less than 10 milliamperes (milliamps or mA)