Question
25.7 Part A What is the electric potential energy of the group of charges in (Figure...
25.7 Part A What is the electric potential energy of the group of charges in (Figure 1)? Assume that y-2.0 nC Express your answer with the appropriate units. 1 of 1 3.0 nc + v. Value N•m 3.0 cm Submit Previous Answers Request Answer 14.0 cm X Incorrect: Try Again; 6 attempts remaining Provide Feedback 3.0 nc
Answers
In general when there is a system of N charges then to calculate the electric potential energy of the system, we need to sum the energies of each pair of charges formed (not repeated)
Given
Q = 3.0 nC
q = -2.0 nC
Let r1 = 3.0 cm
r2 = 4.0 cm
then, r3 = 5.0 cm
Now the potential energy of the system would be:
is the required answer
3.0 nc r1 +) O 3.0 cm r2 14.0 cm 5.0 cm£ bo .We were unable to transcribe this imageWe were unable to transcribe this image
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