Figure 4.1 12.0 V ww 1.5 Ω ww 2.5 Ω www 4.8 Ω www 3.3 Ω 8.1 Ω a. Refer to the circuit provided in Figure 4.1. Determine

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Figure 4.1 12.0 V ww 1.5 Ω ww 2.5 Ω www 4.8 Ω www 3.3 Ω 8.1 Ω a. Refer to the circuit provided in Figure 4.1. Determine the following: (i) The equivalent resistance of the entire circuit. (ii) What is the total current flowing through the power source? (iii) What is the current flowing through the 2.5 2 resistor? (iv) What is the voltage across the 6.3 2 resistor? (v) What is the current flowing through the 3.3 2 resistor? ww 6.3 Ω (4 × 1 mark) (2 x ½ mark) (2 x ½ mark) (4 × ½ mark) (4 × ½ mark) b. When a potential difference of 12.0 V is applied to a wire 6.9 m long and 0.33 mm in diameter, the result is an electric current of 2.1 A. What is the resistivity of the wire? (4 × 1 mark)