Current Resistance Ohms Law Electric Power Series Circuits

Current Resistance Ohm’s Law Electric Power Series Circuits Parallel Circuits $200 $200 $400 $400 $600 $600 $800 $800 $1000 $1000

Charged Bodies Charge Transfer Coulomb’s Law Electric Fields Electric Potential Lightning $400 $400 $800 $800 $1200 $1200 $1600 $1600 $2000 $2000

Final Jeopardy Parallel Circuits

Final Jeopardy 0. 3996 A What is the current leaving the power supply in the circuit shown below V=25 V R 1=100Ω R 2=550Ω R 3=240Ω

$200 What is Amps? The units of current

$400 What is voltage/Potential difference Current is caused by a difference of this in a circuit

$600 25 A 50 C of charge pass by point. A in 2 s. What is the current at point A?

$800 6 times larger If the voltage of a circuit is tripled, and the resistance cut in half, by what factor does the current change by?

$1000 300 C 5 A of current travels past a point in a circuit. How many Coulombs of charge pass by this point every minute?

$200 What is resistivity? Property of the metal that determines how good of a conductor the wire is.

$400 0. 00196 m 2 What is the cross sectional area of a silver wire with radius 0. 025 m?

$600 Short, Wide, Low Resistivity, Cold An ideal wire is… Short/long Wide/narrow High/low Resistivity Hot/Cold

$800 1. 72 x 10 -6 Ω What is the resistance of a 10 m long, copper wire, with cross sectional area of 0. 10 m 2?

$1000 Tungsten A 25 m long, wire with radius 0. 02 m has a resistance of 0. 00111Ω. What is this wire made of?

$200 False Voltage is the reaction to the action of Current. True or False?

$400 ¼ as large The resistance of a circuit is quadrupled, by what factor does the current change by?

$600 6 times larger The Voltage is tripled and the resistance is cut in half. By what factor does the current change by?

$800 2 A What is the current traveling through the circuit?

$1000 0. 8 A A resistor allows a current of 0. 6 A to flow when connected to a 9. 6 V power supply. What current would flow if the same resistor was connected to a 12. 8 V supply?

$200 What is heat energy? The waste energy when current travels through a resistor or light bulb

$400 0. 347Ω What is the resistance of a 50 W engine that draws 12 A of current?

$600 What is Voltage of the circuit? How much energy each electron has in a circuit is determined by this

$800 3. 2 s How much time would it take a 100 W motor to use up 320 J of energy?

$1000 1. 30 x 108 J / 130 MJ / 0. 130 GJ What is the amount of energy produced by a 1500 W generator operating for a day?

$200 What is current? This is the same at all points in a series circuit

$400 What is voltage? The total what is equal to the sum across each resistor in a series circuit?

$600 True Ammeters are put in series with the device you want to measure. True/False

$800 30 C 1. 5 V source 0. 5 A How many coulombs of charge pass through the resistor in a minute?

$1000 0. 5 A What is the current in the circuit?

$200 What is voltage drop? This is the same between all branches of any parallel circuit

$400 7 A into the junction What is the current and direction in the unlabeled branch of the following parallel circuit? 2 A 5 A 10 A

$600 2. 86Ω What is the total resistance of a circuit that has a 10Ω, 20Ω, and 5Ω hooked up in parallel with each other?

$800 Decreases the resistance of the circuit Adding another branch to a parallel does what to the overall resistance of the circuit?

$1000 Smaller Compared to circuit A, the current flowing through circuit B is… larger, smaller, or the same? 18Ω 18Ω 2Ω 2Ω 3Ω

$400 What is an electron? What is able to move between atoms and cause charge flow

$800 +5. 0 C If a silk cloth gains -5. 0 C of charge when rubbing against a glass rod, what is the charge of the glass rod?

$1200 2. 4 x 10 -18 C A pith ball has an excess of +15 elementary charges. What is the charge of the pith ball?

$1600 6. 25 x 1018 charges How many fundamental charges are present in 1 C?

$2000 - 8. 4 x 10 -17 C Which of the following are allowable charges on “real world” objects? -8 x 10 -20 C -1. 36 x 10 -18 C - 8. 4 x 10 -17 C

$400 What is induction? Charging an object without touching

$800 What is polarization? A separation of charges within a neutral object, causing one side to be + and one side to be -

$1200 What is grounding? Charging by induction involves this process to allow excess electrons a path off or onto the object.

$1600 Negative A rod is charged by friction with a cloth. The cloth is left with a positive charge. The rod is then used to charge an object through contact. What is the charge left on the object?

$2000 -2. 3 C each 3 identical metal spheres are brought into contact with each other. What will the final charge be on each sphere after they are -5 C separated? -5 C +3 C

$400 1+, and 1 - If 2 charges repel from one another, what are their charges?

$800 What is charge of the objects, distance between the objects, and coulomb’s constant? The three factors that the force between two charges depends upon

$1200 Quadruples If the charge of each charge doubles, what happens to the electrical force between them?

$1600 1/3 as large If the charge of object 1 triples, and the distance between the 2 charges triples, what happens to the electrical force between them?

$2000 36. 7 m How far apart are two charges, +3 C and +5 C, if they experience an electrical force of 1 x 108 N?

$400 Away from + and towards - Electric field lines point positive charges, and negative charges

$800 0. 5 N/C An object with +5 C of charge is placed into an electric field and experiences 10 N of force. What is the strength of the electric field?

$1200 Point 1 At what point is the electric field the strongest? Or are they are equal? 2 1 3

$1600 What is a 3 M solution? Draw the electric field between the charges + + +

$2000 Remains the same A proton is placed between 2 oppositely charged parallel plates. As the proton moves towards the negative plate the force acting on it…

$400 6. 25 x 1018 e. V Convert 1 J to e. V

$800 1000 J How much work is done to move a 5 C charge through 200 V of potential?

$1200 Decreases When two positive charges are separated, the electric potential of the system…inc. /dec. /remains the same

$1600 1. 6 x 10 -17 J How much work is required to move 1 proton through a potential difference of 100 V?

$2000 14. 14 m/s A 5 kg, +3 C object is brought to a point where it has 1500 V of potential. If released how fast would the object travel?

$400 What are Franklin Bells A device to detect lightning invented by Ben Franklin

$800 What is induction The ground below a lightning cloud is charged by this process

$1200 What is charged by ice and water through friction A lightning cloud becomes charged involving these 2 things through this process

$1600 What is a streamer This comes up from the ground searching to meet with the Leader coming down from the cloud

$2000 It acts as a Faraday cage Why are you safe inside a car when it gets struck by lightning?

Daily Double answer question

Daily Double answer question

Daily Double answer question

The Jeopardy champion!