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.

The following statements are about the electroscope. select all that are true. if an electroscope were given a positive charge beforehand, the leaves would move closer together if a positively charged object were brought near. when a properly prepared electroscope is used to determine the type of charge on an object, the total charge on the electroscope changes when the charged object is brought near (but not touching) the electroscope. depending on how the electroscope is prepared beforehand, the leaves can either move together or move apart when negative charge is brought near. an electroscope must first be given a known type of charge before it can be used to identify the types of charges on objects brought near it. when properly prepared, the leaves on an electroscope will always move further apart when negative charge is brought near. the leaves of an electroscope will move apart if it is given either a positive or a negative charge.