Two electrons are separated by distance rrr. The electrostatic force between the two electrons is X X\,X times the gravitational force between them.
What is the best estimate for XXX?
103410^{34}1034
103810^{38}1038
104210^{42}1042
104610^{46}1046
48 exam-style questions on AQA A Level Physics Electric fields (A-level only), covering Coulomb's law (A-level only), Electric field strength (A-level only), and Electric potential (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.