Eduprobe
Question:
Magnetic field at a distance a from long current carrying wire is proportional to
1a3/2
1a
1√a
1a2
Solution:
Applying Ampere's law on a loop of radius a around the wire,
→μ0I=B(2πa)
→B=μ0I2πa
→B∝1a
1a3/2
1a
1√a
1a2
Applying Ampere's law on a loop of radius a around the wire,
→μ0I=B(2πa)
→B=μ0I2πa
→B∝1a