Static electricity is used in pollution control by applying a static charge to dirt particles in the air and then collecting those charged particles on a plate or collector of the __ electrical charge.

Q. Static electricity is used in pollution control by applying a static charge to dirt particles in the air and then collecting those charged particles on a plate or collector of the __ electrical charge.

A

same

B

opposite

C

Static

D

None of these

Solution:

Static electricity is used in pollution control by applying a static charge to dirt particles in the air.
Then collecting those charged particles on a plate or collector of the opposite electrical charge.
Therefore the correct option is B.

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