The equivalent resistance for a group of parallel resistors is

Explanation:

Resistors are said to be in parallel when they are connected to points at the same voltage; this means that the potential difference is the same across each resistor:

(2)

As a result, the current splits through the different branches, and the total current is the sum of the individual currents through each resistor:

(1)

we can rewrite (1) by using Ohm's law:

and since by eq.(2) the potential difference through each resistor is the same, the last equation becomes

which is the expression that gives the equivalent resistance for a group of parallel resistors.

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

real, smaller and upside-down.   so the answer should be b.