A student experiments with various materials to see which would complete an electrical circuit. His circuit is completed when
the light bulb turns on. The table shows the results of this experiment.
Object Tested
Did the Bulb Turn On?
Penny
Yes
Wooden craft stick
No
Paper clip
Yes
Piece of yarn
No
Shoe string
No
Piece of copper wire
Yes
Little rubber ball
No
What new object is most likely to complete the circuit?
A. a nail because metal is a good conductor
B. a toothpick because wood is a good insulator
C. an eraser because rubber is a good conductor
OD. a piece of cloth because fabric is a good insulator