A student uses an electrostatic generator to charge two small metal spheres, sphere A and sphere B.
The charge on sphere A is 18 μC18\text{ }\mu\text{C}18 μC.
The charge on sphere B is 75 μC75\text{ }\mu\text{C}75 μC.
Calculate the percentage of charge on sphere A compared with the charge on sphere B.
Use the equation:
percentage of charge=charge on sphere Acharge on sphere B×100 \text{percentage of charge} = \frac{\text{charge on sphere A}}{\text{charge on sphere B}} \times 100 percentage of charge=charge on sphere Bcharge on sphere A×10047 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction. Each one has a worked solution and a mark scheme showing where the marks go.