Two points R and S are equidistant from two charges + Q and – 2Q. T...

Question

Two points R and S are equidistant from two charges + Q and – 2Q. The work done in moving a charge – Q from point R to S is :

Accepted Answer

Since R and S are each equidistant from BOTH charges ($+Q$ and $-2Q$), the potential at R equals the potential at S ($V_R=V_S$), as potential depends only on the distances to each charge.

Work done in moving charge $-Q$ from R to S:

$$W=(-Q)(V_S-V_R)=(-Q)(0)=0$$

Answer: (A) Zero

💬 Doubts & Comments

Abhi tak koi comment nahi

Apna comment likhein

💬 Doubts & Comments

Abhi tak koi comment nahi

Apna comment likhein

🔔 Email Updates Lein