Two straight infinitely long and thin parallel wires are spaced 0.1m apart and carry a current of 10A each. Find the magnetic field at a point distance 0.1m from both wires in the two cases when the currents are in the (a) same and (b) opposite directions.

Explanation

To solve the problem of finding the magnetic field at a point equidistant from two parallel wires carrying currents, we will break it down into two parts: (a) when the currents are in the same direction and (b) when the currents are in opposite directions.

### Given Data:
- Distance between the wires, \( d = 0.1 \, \text{m} \)
- Current in each wire, \( I = 10 \, \text{A} \)
- Distance from the point to each wire, \( r = 0.1 \, \text{m} \)

### Part (a): Currents in the Same Direction
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