Question

Two like charges ratio 1:4 are 30cm apart the resultant field strength vanish at distance from smaller charge ​

Answer 1

Answer:

Let at a distance x from the smaller charge, E be zero.

E due to Q = E due to 4Q

⇒

x

2

kQ

=

(30−x)

2

k4Q

⇒

x

1

=

30−x

2

⇒30−x=2x

⇒30=3x

⇒x=10 cm.

Answer 2

Answer:

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