Question

a device which is used to test whether an object is carrying charge or not is known as_____________

Answer 1

Gud afternoon
Here is ur ans

ELECTROSCOPE
(gold leaf electroscope or pith ball electroscope)
they work on principle of conduction and induction of charge

hope it helps you

Answer 2

$hi \: \: \: ..$
Completed Statement :
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A device which is used to test whether an object is carrying charge or not is Electroscope .
______________________________
$hope \: \: this \: \: helps..$