Download Physics 30 Concept Check 6 Concept: Calculate the electric

Physics30ConceptCheck6
Concept: Calculatetheelectricpotentialdifferencebetweentwopointsinauniform
electricfield
1.
Determinetheamountofpotentialdifferencebetweentwoparallelplatesthatare
separatedby6.0cmiftheelectricfieldbetweentheplatesisdeterminedtobe
1.0x104N/C.
2.
Ifaparticleismoved3.0cmperpendiculartotwoplatesproducingauniformelectric
fieldof10000N/C,whatisthepotentialdifferencebetweentheit’sstartingposition
andfinalposition?
Concept: explain,quantitatively,electricalinteractionsusingthelawofconservationof
energy
3.
Oneelectronisshotdirectlyatastationaryelectron.Whatenergytransformations
wouldoccur?
4.
Determinetheelectricalpotentialenergyofanelectron10cmawayfroma10μC
charge.
5.
Determinethefinalvelocityofanelectronthatstartsfromrestasittravelsfrom20
cmto10cmawayfroma10μCcharge.
6.
Analphaparticleacceleratesthroughapotentialdifferenceof3000V.Whatisit’s
velocity?
7.
AprotonismovedfrompointAtopointBinthediagramshownbelow.Determine
thespeedtheprotonwouldreachatpointAifitwasreleasedatpointB.
A
1500V
7.0cm
3.0cm
B
8.
Whatpotentialdifferencewouldberequiredtostopasodiumiontravellingat
2.25x105m/s?(mNa=3.82x10-26kg).
Concept:
9.
defineelectriccurrentastheamountofchargepassingareferencepointperunit
oftime
Whatistheunitofcurrent?
10.
11.
If1.53x10-10Cofchargeflowthroughacircularcrosssectionofawirein
7.81x10-9s,whatisthecurrent?
Howmanyelectronsflowpastagivenpointin1.00msifthecurrentis3.62A?