Question

A wire is run through a large piece of paper, forming a perpendicular angle with the paper. A bunch of magentically senstive iron shavings are spread across the paper and a current is run through the wire. Which of the following would be the most accurate description of what would happen?
A. The filings would shape themselves into a square shape around the wire, each corner of the square perpendicular to the central wire

B. The filings would form parallel lines across the paper, each one forming a perpendicular angle with the central wire

C. The filings would shape themselves into a circular shape around the wire, the direction rotating based on the direction of the flow of current

D. The filings would all be attracted magnetically towards the wire and will all be pulled into a central mass in close proximity to the wire and will leave the outer part of the sheet of paper bare

Answer 1

Answer:

Option C

Explanation:

• As they are iron shavings they are magnetic i.e they can be attracted by magnet .
• So when electric current is passed through the wire they would form an electromagnetic field .
• And the shape is circular