Power source that provides a current of 1.6 a to two 5 ω resistors connected in series is moved to a parallel circuit that consists of three identical resistors. in the parallel circuit, the overall current is 2.0 a.
the value of a resistor used in the parallel circuit is?
a)5.3ω
b)8.0ω
c)12ω
d)24ω
it's d : p

This one is complicated. Not hard, but several steps. The two 5-ohm resistors in series have a total resistance of 10 ohms. 1.6 A through 10 ohms means the battery is (1.6 x 10)=16 volts. Then ... 16 volts produces 2A of current through (16/2)=8 ohms of resistance. If 3 identical resistors in parallel look like like 8 ohms, then each one is (8 x 3)= 24 ohms. That's D.

Since the pully is a simple machine so the mechanical advantage is a 1