Distance from origin to A: rA=42+42+22=6 m
Distance from origin to B: rB=22+22+12=3 m
Work done: W=q2(VB−VA)=q2×4πε0q1(rB1−rA1)
=2×10−6×9×109×10−8×(31−61)
=18×10−5×61=30×10−6 J
JEE Main 2026 — Physics Electromagnetism
A point charge of 10−8C is placed at origin. The work done in moving a point charge 2μC from point A(4,4,2)m to B(2,2,1)m is ____ J. (4πϵo1=9×109 in SI units )
Held on 21 Jan 2026 · Verified 6 Jul 2026.
45×10−6
15×10−6
0
30×10−6
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