Question

Two point charges +2 C and -18 C are placed 10 cm apart in air. Find the position where the resultant electric field intensity is zero

Answer 1

Answer:

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Physics

Electric Charges and Fields

Electric Field and Electric Field Lines

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PHYSICS

Two charges 2μC and 1μC are placed at a distance of 10cm. The distance of third charge from one of the charges so that it does not experience any force is:

December 30, 2019

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Kamalpreet Sagani

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VIDEO EXPLANATION

ANSWER

Let the charge is placed at distance x from 2μc

Now the net force acting on charge q should be zero.

⇒

(10−x)

2

k(1×10

−6

)q

​

=

x

2

(2×10

−6

)q

​

⇒

10−x

1

​

=

x

2

​

​

⇒x=10

2

​

−x

2

​

⇒x(1+

2

​

)=10

2

​

⇒x=

1+

2

​

10

2

​

​

⇒x=

2.414

14.14

​

⇒x=5.857cm

solution

Explanation: