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Q.A long straight wire of radius $a$ carries a steady current $I$ . The electric field inside the wire ( $r < a$ ) is (JEE Main 2022)

a

\rho r/(2\epsilon_0)

b

I r/(2\pi a^2 \epsilon_0)

c

I/(2\pi a \epsilon_0)

d

Zero

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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