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A neutral plastic ruler becomes charged when it is rubbed with a woollen cloth. After rubbing, the ruler has a charge of -3,5 x 10-15 C.
10.1 Distinguish between a neutral object and a charged object. (2)
10.2 Does the ruler GAIN or LOSE electrons? (1)
10.3 Calculate the number of electrons transferred during the process of rubbing. (3)
10.4 The charged ruler is now brought closer to pieces of paper. The pieces of paper are attracted to the ruler, as shown below.
10.4.1 Explain why the pieces of paper are attracted to the ruler. (3)
10.4.2 Name ONE application of electrostatics in our daily lives. (1)
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