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The directopm (theta) of vec E at point...

The directopm (theta) of ` vec E` at point `P` due to unifor charged finite rod will be .
` .

A

at angle ` 30^(0)` from x-axis

B

`45^0` from x-axis

C

`60^0` from x-axis

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
` E_x = (Klambda)/d [sin 0^@ + sin 60^2 ] = (sqrt 3 Kl)/ (2 d)`
`E_y = (Klambda)/d [ cos0^@ ] = (K almbda)/(2d)`

` tea theta = E_y /E_x = (K almbda)/(2d) xx (sqrt 3 K lambda)/d = 1/(sqrt 3)`
`theta =m 30^@`
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