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 | |