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Kirchhoff's Junction Law

Find the elec...

Question

Find the electric field in the region labelled $3$

0

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k_{e} \frac{q}{r^{2}}

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2 k_{e} \frac{q}{r^{2}}

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3 k_{e} \frac{q}{r^{2}}

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Solution

The correct option is A $0$
For label $(3)$ . The electric field in the region labelled $3$ is $= 0$
because here $q = 0$
$E = \frac{1}{4 π ϵ_{0}} l n (\frac{3}{q}) \times q$
$∴$ $q = 0$
So, $E = 0$

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