Question

A piece of wool is rubbed against a PVC strip. What will be the charge on the
strip, if approximately 2 x 10^12 electrons are transferred from the wool to the
PVC strip?

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Answer 1

Answer:

-320 nC

Explanation:

Given,

• A piece of wool is rubbed against a PVC strip.
• 2 x 10^12 electrons are transferred from the wool to the PVC strip.

Principle: Triboelectric charging (Charging an object by rubbing)

From the Quantisation of Charges,

Q = ne

Q = 2×10^12 × -1.6×10^-19. {electron(-) is transf.}

Q = -3.2 × 10^-7 C

Q = -320 nC

Charge on the strip = -320 nC