Paper Topic:

Physics Problems

Ch 12 Q22 . Point B and C will both have electric fields pointing away from them . Points A and D will have no net electric field

Ch .12 Q25 . Potential energy is inversely proportional to the distance between the charges . Since the charges are not alike , the resulting potential is negative . Therefore , if the magnitude increases , the resulting potential will be lower than the original

Ch 12 Q30 . A and D will have electric fields that are equal in magnitude but opposite in direction

Ch12 E5

F kQ1Q2 /r2

27

kQ1Q2 /r2

K kQ1Q2

27 K /r2

F K (3r )2

F 27 /9

F 3 N

Ch12 E14 ?V Vf - Vi ?PE /q ?PE (Vf - Vi )q (6V - 0V (3 C 18 J

Ch13 Q1

of the configurations will work because the first is shorted and the second is an open circuit . In both cases , no current will flow through the bulb

Ch13 E16

a .

IV (7 A (110 V 770 W

b . V IR

R V /I 110V /7A 15 .71

Ch13 E17

P IV

I

/V 5500 W /220 V 25 A

Ch14 Q3 . In both magnetic poles and charges , opposite poles or charges attract , while same poles or charges repel

Ch 14 Q25 . The induced voltage is proportional to the number of turns in a coil . Given that all other parameters are the same , a coil with twice the number of turns will produce twice the induced voltage as compared to its counterpart...

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