Question

Take a cardboard and pass the conductor through it. Sprinkle some iron filings around the conductor. Now, gently tap the cardboard. The filings do not take any definite direction. Repeat this by allowing an electric current to flow through it. Observe the filings. What direction do they take?

Answer 1

When current flows through the conductor, the iron filings arrange themselves in concentric circles around it. These circles show the magnetic-field pattern produced by the current-carrying conductor.