18) A 60 Ohm resistor is made by winding Platinum wire into a coil. If the Platinum wire has a diameter of 0.10 mm, what length of wire is needed? Note: Resistivity value of Platinum is 10.4 x 10 -8 a) 1 b) 2 c) 3 d) 4 e) 4.5 19) Based on the circuit shown below, determine the equivalent resistance of the circuit? a) 5 b) 10 c) 15 d) 20 e) 25 man 40 V 50 20) Based on the circuit above, determine the value of the reading of Voltmeter V. a) 10 b) 14 c) 16 d) 20 e) 40