chapter 17 - electric potential stuff

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17 Terms

1

conservative force

work done by this type of force in moving an object between any two positions is independent of the path taken

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2

deltaPE = -W

change in the potential energy between any two points equals the negative of the work done by a conservative force on an object as it moves from one point to another

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3

W = F(d) = E(q)(d)

work done by the electric field to move a charge some distance

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4

positive plate

positive charge has the greatest potential energy here

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5

negative plate

negative charge has the greatest potential energy here

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6

electric potential

electric potential energy per unit charge

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7

V=PE/q

electric potential formula

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8

delta V = delta PE/q

potential difference formula

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9

postive plate to negative plate

movement of positive test charge

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10

negative plate to positive plate

movement of negative test charge

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11

volt

SI unit of electric potential

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12

voltage

SI unit of potential difference

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13

V = k(Q)/r

electric potential of a point charge - electric potential at a distance r from charge Q

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14

W = -q(delta V)

work formula derived from change in potential energy formula (delta PE = q(delta V)); work done by the electric field to move a positive charge from intial point to final point is equal to the negative change in potential energy

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15

delta V= (E)(d)

potential difference and electric field relationship; electric field points in decreasing electric potential

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16

1N/C = 1V/M

SI units of Electric field equal one another

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17

equipotenial lines

lines that are perpendicular to electric field lines; all points on this line have the same electric potential; the potential difference is zero, so no work is required to move a charge from one point to another on this line

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