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Transcript
Welcome to Physics Jeopardy Electric Current Circuits Electric Powers Capacitance Voltage 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Final Jeopardy Question Current 100 pts What is the unit for current? Back current 100 pts Answer Amp =C/s Back Current 200 pts How much charge must pass in 2s for the current to be 4.0A? Back Current 200 pts 8C Back Current 300 pts The rate of flow of charge in a closed circuit? Back Current 300 pts Current Back Electric current 400pts What is the device used to measure current and how is it placed in the circuit? Back Current 400 pts Answer Ammeter, series Back Current 500 pts Which of the following would increase the current through a light bulb in a circuit? a. Adding a battery in series b. Adding a battery in parallel c. Adding a switch d. Adding another light bulb Back Current 500pts Answer Adding a battery in series Back Circuits 100pts What are three necessary elements To complete a circuit? Back Circuits 100 pts Voltage source Resistance Conducting wire Back Which is true concerning charges in Circuits? 200 pts a. Charges that leave the positive terminal of the battery Come back through the negative terminal b. Charges are lost as they come back into the battery c. Charges are lost as they enter the light source d. Charges are created inside the battery Back Electric Materials 200pts Answer a. Charges that leave the positive terminal of the battery come back into the negative terminal Back Circuits 300 pts What potential difference is required to cause a 6.0 A to flow through a resistance of 2.0 ohms? Back Electric Materials 300 pts 12 Volts Back Electric circuits 400 If a light goes out in a string of Christmas lights and the whole strand goes out. Those lights must be connected in _________. Back Electric current 400 pts Answer Series Back Electric Circuits 500 pts A 12 volt battery is connected to two light bulbs in parallel, if the one light goes out what happens to the other light? Back Electric Materials 500 pts Answer Nothing changes Back Electric Power 100 pts A 500 W device is connected to a 100-V power source. What Current flows through it? Back Electric Power 100 pts Answer 5 Amps Back Electric Power 200pts Rate at which energy is transferred is called? Back Electric Forces 200pts Answer Power Back Electric Power 300pts What happens to the power dissipated in a circuit if the current increases by a factor of four, and the resistance is doubled? Back Electric Forces 300pts Answer Increases by a factor of thirty two. Back Electric energy can be conserved by using high voltage lines because? Back Current decreases and so does the loss of power Back What power is lost when a 6 Amp current flows through a 5 ohm resistor? Back 180 Watts Back What is the capacitance on a Capacitor if with a charge of 30C and a Voltage of 120 V? Back .25F Back What does the capacitance of a parallel capacitor depend on? Back Indirectly related to: C =kA/d Distance between plates Directly related to: a. Insulators between plates b. Area of plates Back What is the unit of capacitance? Back Farad Back What is the energy of a capacitor that has a voltage of 6V and a capacitance of 10 f ? Back 180 J Back A 4F capacitor provides 100 J of energy. What is the charge on the capacitor? Back 28C Back What is another name for potential difference? Back Voltage Back What current is produced if an 3 ohm resistor is connected in series with a 9 v battery? Back 3 Amps Back How is voltage related to Electrical potential energy? Back Voltage = PE / q Back What is the voltage across a region With a distance of 5cm and an electric Field of 4N/C? Back .2 volts Back The work done on a test charge Divided by that test charge? Back Voltage Back When was the internet developed? Back 1960’s Back