A horizontal overhead power lines carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current `1*5m` below the line?

Explanation

To solve the problem, we will follow these steps:

### Step 1: Identify the given values
- Current (I) = 90 A
- Distance (r) = 1.5 m
- The magnetic field (B) is to be calculated below the power line.

### Step 2: Use the formula for the magnetic field due to a straight current-carrying conductor
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