AOS3_2A

Calculate the charge, in Coloumbs, carried by 6 billion electrons.

Which of the following statements correctly describes electric charge?

• It can be positive or negative.

• all of the above

• It cannot be created or destroyed.

• It is a fundamental property of particles.

When an electron with charge  −1.6 × 10 ⁻¹⁹   C is held at location X, away from a positively charged  particle, the electron has  3.4 × 10 ⁻¹⁸   J of electric potential energy. When the electron is at location Y,  closer to the positive particle, it has  1.0 × 10 ⁻¹⁸   J of electric potential energy. Determine the potential difference from X to Y.

• 2 V

• 6 V

• 10 V

• 15 V

Calculate the amount of electrical potential energy carried by 5 C of charge at a potential difference of 10 VC

• 10 J

• 50 J

• 25 J

• 100 J

Calculate the charge that has flowed through a torch battery producing a current of 300 mA if it has been left for 20 minutes t

• 280 C

• 160 C

• 360 C

• 500 C