Where is the magnetic field of a current element (i) minimum and (ii) maximum?

Explanation

To solve the question of where the magnetic field of a current element is minimum and maximum, we can follow these steps:

### Step 1: Understand the Biot-Savart Law
The Biot-Savart Law gives us the expression for the magnetic field \( \mathbf{B} \) due to a current element \( \mathbf{dl} \):
\[ \mathbf{B} = \frac{\mu_0 I}{4\pi} \frac{\mathbf{dl} \times \mathbf{r}}{|\mathbf{r}|^3} \]
where:
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