MASTER THE QUESTIONS IN THIS PAPER) Caloulate the electrical force between an electron and a proton in a hydrogen atom, given that the distance between the charges centers is 53x10" m. (2 MARKS) 2. State the meaning of charge is conserved". (2 MARKS) 3. State the difference between a good conductor and a good insulator. (2 MARKS) 4. State the meaning of electric dipole". (2 MARKS) 5. Explain in your own words what an electric field is.

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Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

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