Paper 2 H - SAMPLE SET 1 Q8 Answers
Questions
(8) Figure 23 shows an electric car connected to a battery charger.
(8) Figure 23 shows an electric car connected to a battery charger.
The car has a rechargeable battery to drive its motor.
The rechargeable battery provides a potential difference of 330V and can store up to 64MJ.
It takes 8 hours for the battery to receive a full charge.
Assume that the charging process is 100% efficient.
(a) Calculate the total charge that flows while the battery is being charged. (3)
The rechargeable battery provides a potential difference of 330V and can store up to 64MJ.
It takes 8 hours for the battery to receive a full charge.
Assume that the charging process is 100% efficient.
(a) Calculate the total charge that flows while the battery is being charged. (3)
total charge = ............................................... C
(b) Calculate the average charging current. (3)
current = ............................................... A
(c) The battery charger shown in Figure 23 is connected to the 230V a.c. domestic mains supply.
The output voltage of the charger is 335V and it provides a d.c. charging current. Charging stops if the charging current exceeds 15A.
Explain how electrical components in the charger can be connected together to give this type of output. (6)
(Total for Question 8 = 12 marks)
The output voltage of the charger is 335V and it provides a d.c. charging current. Charging stops if the charging current exceeds 15A.
Explain how electrical components in the charger can be connected together to give this type of output. (6)
(Total for Question 8 = 12 marks)