$35 A$ current is flowing in long straight wire. Calculate the magnetic field at a point which is at a distance $20 c m$ from the wire.

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Solution

Current flowing in conducting wire $I = 35 A$
Distance from wire $r = 20 c m = 0.20 m$
Intensity of magnetic field on point
$B = \frac{μ_{0} I}{2 π d} = \frac{2 \times 10^{- 7} \times 35}{0.20}$
$B = 3.5 \times 10^{- 5} T$

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35A current is flowing in long straight wire. Calculate the magnetic field at a point which is at a distance 20cm from the wire.

Current flowing in conducting wire I=35ADistance from wire r=20cm=0.20mIntensity of magnetic field on pointB=μ0I2πd=2×10−7×350.20B=3.5×10−5T

$35 A$ current is flowing in long straight wire. Calculate the magnetic field at a point which is at a distance $20 c m$ from the wire.

Current flowing in conducting wire $I = 35 A$
Distance from wire $r = 20 c m = 0.20 m$
Intensity of magnetic field on point
$B = \frac{μ_{0} I}{2 π d} = \frac{2 \times 10^{- 7} \times 35}{0.20}$
$B = 3.5 \times 10^{- 5} T$