Question

Which of the following phenomena does not involve electric charges?

• A. Rubbed comb attracts paper pieces
• B. Lightning occurs in a rainy environment
• C. Crane attracts iron pieces from a junk yard
• D. A lose plug in the socket produces sparks

Answer 1

The correct option is C

Crane attracts iron pieces from a junk yard

In junkyards, large electromagnets are used for moving metallic junks such as scraped vehicles. This is a magnetic effect because the electromagnet of the crane attracts metallic junk to move them from one place to another. The working of the crane in a junkyard does not have any involvement of electric charges.