KCET · Physics · Electrostatics
A \(200\) J of work is done in moving a charge \(5\) C from a point A where the potential is \(-20\) V to another point B where potential is V volt. The value of V at B is
- A \(10\) V
- B \(20\) V
- C \(40\) V
- D \(60\) V
Answer & Solution
Correct Answer
(B) \(20\) V
Step-by-step Solution
Detailed explanation
The work done in moving a charge \(q\) from point A to point B is given by \(W = q(V_B - V_A)\).
Substituting the given values:
\(200 = 5(V - (-20))\)
\(200 = 5(V + 20)\)
\(V + 20 = 40\)
\(V = 20\) V
Answer: \(20\) V
Substituting the given values:
\(200 = 5(V - (-20))\)
\(200 = 5(V + 20)\)
\(V + 20 = 40\)
\(V = 20\) V
Answer: \(20\) V
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