210 For all parts show your working
aCalculate the current and the voltage for each resistor show in Figure A1.1. bWhat is the total power consumed by the array of resistors in Figure Al.1?
[8 marks]
[2 marks]
10 mA
12
1k
18
2k
Figure A1.1
cWhat is the input resistance of the unknown circuit in Figure Al.2?
[6marks]
dWhat is the current flowing through resistor Ro
[2marks]
eIf the power supply voltage is 50V,what is the value of Ro
[2 marks]
R=1k
Unknown: circuit
V=12V
V=1V
Figure A1.2