Calculate the resistance of a 2 km length of aluminum overhead power cable if the cross-sectional area of the cable is 100 mm². Take the resistivity of aluminum to be 0.03 x 10^-6 Ω-m.
For the circuit shown, find the equivalent resistance, the value of the supply voltage, the value of the current, and the voltage drop at the 60 Ω resistor.
Ra = 60 Ω
Find the current flowing and voltage drop at R;
Es = 300V
R4 = 1.2 kΩ