A long straight wire carries a current of 35 A. What is the magnitude of the field `vecB` at a point 20 cm from the wire?

Explanation

To find the magnitude of the magnetic field \( \vec{B} \) at a point 20 cm from a long straight wire carrying a current of 35 A, we can use the formula for the magnetic field around a long straight conductor:

\[ B = \frac{\mu_0 I}{2 \pi d} \]

where:
- \( B \) is the magnetic field,
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