Questions
Two positive point charges of and are 10cm apart. The work done in bringing them 4 cm closer is
detailed solution
Correct option is C
W=Uf−Ui=9×109×Q1 Q21r2−1r1⇒W=9×109×12×10−6×8×10−614×10 −2−110 ×10 −2=12.96J≈13JTalk to our academic expert!
Similar Questions
Two charges q1 and q2 are placed 30 cm apart, shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is , where k is
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