While writing with chalk on the blackboard, your teacher is able to wr – McqOptions

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1.	While writing with chalk on the blackboard, your teacher is able to write with the help of this force:
A.	Gravitational force
B.	Elastic force
C.	light energy to electrical energy.
D.	Electrostatic force
E.	None of these
Answer» D. Electrostatic force

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