Final answer:
To calculate the magnetic field created by a thin wire, one can use the Biot-Savart law. By dividing the wire into small segments and considering the direction of current flow, the magnetic field at a specific point can be determined.
Step-by-step explanation:
The magnetic field created by a thin straight wire can be calculated using the Biot-Savart law. This law allows us to determine the magnetic field at a point due to a small segment of the wire. By dividing the wire into small straight line segments, the magnetic field created by each segment can be calculated. The magnetic field contribution from each segment can be determined by considering the direction of the current flow and using the right-hand rule. Finally, by summing up the contributions from all the segments, the total magnetic field at the desired point can be calculated.