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What is the potential energy of a system of two charges +q and +q separated by a
What is the potential energy of a system of two charges +q and +q separated by a distance r?
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Practice Questions
1 question
Q1
What is the potential energy of a system of two charges +q and +q separated by a distance r?
0
k*q²/r
-k*q²/r
2k*q²/r
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Potential energy U = k * (q1 * q2) / r = k * (q * q) / r = k*q²/r.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the potential energy of a system of two charges +q and +q separated by a distance r?
Solution:
Potential energy U = k * (q1 * q2) / r = k * (q * q) / r = k*q²/r.
Steps: 5
Show Steps
Step 1: Identify the formula for the potential energy (U) between two charges. The formula is U = k * (q1 * q2) / r.
Step 2: Recognize that in this case, both charges are the same, +q and +q. So, we can replace q1 and q2 with q.
Step 3: Substitute q1 and q2 in the formula with q. This gives us U = k * (q * q) / r.
Step 4: Simplify the equation. Since q * q is the same as q², we can rewrite the equation as U = k * q² / r.
Step 5: Conclude that the potential energy of the system of two charges +q and +q separated by a distance r is U = k * q² / r.
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