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11.1 Charging by friction

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Question 12

During an electrostatic demonstration, a teacher rubs a glass rod with a silk cloth. The glass rod acquires a net positive charge of +8.0 × 10-11 C.

Taking the elementary charge to be e=1.6×10−19 Ce = 1.6 \times 10^{-19}\text{ C}e=1.6×10−19 C, which statement correctly explains this observation in terms of particle transfer?

A

5.0×1085.0 \times 10^85.0×108 protons have been transferred from the silk cloth to the glass rod.

B

5.0×1085.0 \times 10^85.0×108 electrons have been transferred from the glass rod to the silk cloth.

C

5.0×1085.0 \times 10^85.0×108 electrons have been transferred from the silk cloth to the glass rod.

D

5.0×1085.0 \times 10^85.0×108 protons have been transferred from the glass rod to the silk cloth.

Markscheme

11.1 Charging by friction Questions

  1. GCSE
  2. /Physics
  3. /11.1 Charging by friction

47 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction, covering 11.1.1 Charging insulators by friction, 11.1.2 Forces between charges, 11.1.3 Electrostatic phenomena, and 11.1.4 Earthing and removing charge. Each one has a worked solution and a mark scheme showing where the marks go.

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