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An element vec(Delta) = Delta x hati is placed at the origin as shown (fig.) and carries a current I = 2 A . Find out the magnetic field at a point p on the y-axis at a distance of 1.0 m due to the element Delta x = 1 cm. Give the direction of the field produced. |
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Answer» SOLUTION :Here `DL = Delta x = 1 CM = 10^(-2) m, I = 2 A and r = 1.0 m` MOREOVER `theta = 90^@` `:.` Magnetic field `DeltaB = (mu_0)/(4pi) cdot (I dl sin theta)/(r^2) = (10^(-7) xx 2 xx 10^(-2) xx sin 90^@)/((1.0)^(2))` `= 2 xx 10^(-9) T` The direction of magnetic field is +z- axis. 
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