Multiple choice

Which of the following can be charged easily by friction? (a) Plastic scale (b) Copper rod (c) Inflated balloon (d) Plastic straw

  1. Only a and b

  2. Only a and c

  3. Only a, b and c

  4. Only a, c and d

  5. Only a and d

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A plastic scale and an inflated balloon can be charged by friction. A plastic straw can also be charged by friction. Thus, this is a correct answer.