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  • A long straight vertical wire carries a current of 10 ampere flowing upwards through it at a place where the horizontal component of the earth’s magnetic induction is 0.3 gauss. Then the tota

A long straight vertical wire carries a current of 10 ampere flowing upwards through it at a place where the horizontal component of the earth’s magnetic induction is 0.3 gauss. Then the total magnetic induction at a point 5 cm from the wire due magnetic north of the wire is:

Option: 1

0.7 gauss


Option: 2

0.5 gauss


Option: 3

0.1 gauss


Option: 4

0.4 gauss


Answers (1)

best_answer

\frac{\mu_0}{4 \pi}=\frac{2 \mathrm{l}}{\mathrm{r}}=0.4 \mathrm{G}(\mathrm{r}=5 \mathrm{~cm})and perpendicular to 0.3 G due magnetic north

Posted by

Gautam harsolia

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