Four resistors, each of resistance 8Ω, are joined in parallel and connected to a 24V battery.
(a) Calculate the equivalent resistance of four 8Ω resistors connected in parallel.
(b) Compare this equivalent resistance with 8Ω and explain why the two values differ.
(c) If a fifth 8Ω resistor is added in parallel, determine the new equivalent resistance and comment on the trend.