40

Question 1

if change in potential is negative (for a proton), the change in potential energy is negative

change in KE is posiitive

Answer 1

potential energy is measured in Joules, or eV (-1.6 x 10^-19 J)

Question 2

terminal voltage

Answer 2

less than ideal voltage

Question 3

disconnect the battery and add a dielectric…

Answer 3

1. Charge is trapped, Q = constant
2. V decreases by a factor of K
3. E decreases by a factor of K

Question 4

add a dielectric

Answer 4

1. V does not change
2. C increases, so Q increases by a factor of K
3. E does not change
4. PE increases by a factor of K

Question 5

in series, a larger capacitor has a LOWER voltage drop than a smaller capacitor

Answer 5

p. 1192

in series, all capacitors have the same Q (Q1 = Q2), their voltages can be determined afterward, V = Q/C

Question 6

in series, a larger capacitor has a LOWER voltage drop than a smaller capacitor

Answer 6

p. 1192

in series, all capacitors have the same Q (Q1 = Q2), their voltages can be determined afterward, V = Q/C

Question 7

magnetic field = MOVING charges

Answer 7

magnetic field exerts NO FORCE on a charge at rest

Question 8

P = IV (IVy schools are Powerful)

Answer 8

Power is proportional to current, NOT resistance