Three charges −q, +2q and −q are ar- ranged on a line as shown in the Fig. 1.84. Calculate the field at a distance r >> a on the line. 2 -4 +2g -(x − a)— —(r + n)— Fig. 1.84 P

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Three charges −q, +2q and −q are ar-
ranged on a une as shown in the Fig. 1.84. Calculate the field
at a distance r >> a on the line.
3
K-
-4
2
KA
+24
~}
…....
-(r− a)—
· } —
-(x + n)—
Fig. 1.84
P
-
H
II
Transcribed Image Text:Three charges −q, +2q and −q are ar- ranged on a une as shown in the Fig. 1.84. Calculate the field at a distance r >> a on the line. 3 K- -4 2 KA +24 ~} ….... -(r− a)— · } — -(x + n)— Fig. 1.84 P - H II
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