Mr. Rogers' AP Physics C: E&M (with IB Physics) Objectives Syllabus 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter

 AP Physics  Current Events Practice Test 1 ) A metal sphere has a static charge of 5 coulombs and discharges in .01 seconds. What is the current? 500 amps 2 ) A sphere with a charge of 2 coulombs is accelerated through a voltage difference of 5000 volts. What is the sphere's kinetic energy? 10,000 joules 3 ) Bob runs his 100 watt stereo for an hour.  How many joules of energy does it use in this time? 360,000 joules 4 ) If Bob's 100 watt stereo runs on 100 volts DC, how many coulombs of charge will pass through it in an hour. 3600  C 5 ) Bob has a box of 10 ohm resistors. How many could he plug into the wall outlets if the voltage were 100 volts DC and the breaker blew at 21 amps and didn't blow. 2 6 ) A circuit has a 20 ohm resistor in series with a 5 ohm resistor and a 10 volt battery. Draw the circuit showing how you would connect a voltmeter and an ammeter so that you could measure the voltage drop across the 5 ohm resistor and the current though it. 7 ) You have a cylindrical shaped copper bar with a resistance of 8 ohms. What will it's resistance be if the the bar is stretched to twice its length? 32 ohms 8 ) You have a box of 5 volt solar cells. How many would be needed to produce current at 100 volts. 20 How should they be connected? series 9 ) A device with a resistance of 4 ohms consumes 5 coulombs of charge in 10 seconds. What is the power consumption? 1 Watt What is the voltage drop across the resistor?  2 volts