Electric Charge and Electric Force
AP Physics C Electricity and Magnetism · Flashcards · Application
AP PHYSICS C ELECTRICITY AND MAGNETISM · FLASHCARDS
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QUESTION
Determine the resultant force on a charge located at the center of an equilateral triangle with equal charges at each corner.
QUESTION
What is the electric force on a
2
C
2 \text{ C}
2
C
charge in a
5
N/C
5 \text{ N/C}
5
N/C
field?
QUESTION
Calculate the electric field at a point
1
m
1 \text{ m}
1
m
from a
2
C
2 \text{ C}
2
C
charge.
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ANSWER
E
=
1.8
×
10
10
N/C
E = 1.8 \times 10^{10} \text{ N/C}
E
=
1.8
×
1
0
10
N/C
. Using
E
=
k
q
r
2
=
8.99
×
10
9
×
2
1
2
E = k\frac{q}{r^2} = 8.99 \times 10^9 \times \frac{2}{1^2}
E
=
k
r
2
q
=
8.99
×
1
0
9
×
1
2
2
.
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