4.
[10]
a. In the following circuit determine the values of 11, 12 and 13-
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50
Loop i 12V
10 9
LA
E
+
I
200
E
I
b. A 60-volts potential difference is applied to the circuit below.
i. Find the equivalent resistance of the circuit,
i. The current in the circuit,
iii. The current in the 10-ohm resistor.
131
[2]
[3]
c. Calculate the resistance per unit length of a 22-gauge Nichrome wire of
radius 0.321 mm.
[2]