Potential Difference - WS - L42 - PHY - ATPL48

The p.d. across the lamp in Figure below is 12V. How many joules of electrical energy are changed into light and heat when a charge of 1 C passes through it?

• 12J

• 2J

• 11J

• 0.083J

The p.d. across the lamp in Figure below is 12V. How many joules of electrical energy are changed into light and heat when a charge of 5C passes through it?

• 60J

• 24J

• 17J

• 7J

The p.d. across the lamp in Figure below is 12V. How many joules of electrical energy are changed into light and heat when a current of 2A flows in it for 10s?

• 24J

• 240J

• 0.6J

• 1.2J

Three 2V cells are connected in series and used as the supply for a circuit. What is the p.d. at the terminals of the supply?

• 6V

• 2V

• 4V

• 1V

Three 2V cells are connected in series and used as the supply for a circuit. How many joules of electrical energy does 1C gain on passing through one cell?

• 2J

• 6J

• 3J

• 0.5J

Three 2V cells are connected in series and used as the supply for a circuit. How many joules of electrical energy does 1C gain on passing through all three cells?

• 6J

• 2J

• 14J

• 3J

Each of the cells shown in Figure below has a p.d. of 1.5V. Which of the arrangements would produce a battery with a p.d. of 6V?

• A

• B

• C

• D