Page 710 - SUBSEC October 2017_Neat
P. 710
- 6 -
SECTION A
Answer ALL questions.
Write your answers in the spaces provided in this booklet.
1. The circuit shown in Figure 1 is used to study the discharge of a capacitor. When the DO NOT WRITE IN THIS AREA
moveable contact is connected to P, the capacitor, C, charges.
Figure 1. Circuit diagram
(a) Explain how energy is stored in the capacitor when the switch is connected to P.
................................................................................................................................. DO NOT WRITE IN THIS AREA
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
[2 marks]
(b) When the switch is in position P, calculate the energy stored in the capacitor if the
voltage, V, is 1.5 V and the value of the capacitor is 1 000 µF.
.................................................................................................................................
.................................................................................................................................
................................................................................................................................. DO NOT WRITE IN THIS AREA
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
[3 marks]
GO ON TO THE NEXT PAGE
02238020/CAPE/SPEC 2017
‘‘*’’Barcode Area”*”
Sequential Bar Code
