Question 579716
1. Two 100-ohms resistors are connected in series to a 24-V battery.
 What is the current through each resistor and what is the equivalent resistance of the circuit?
:
In series the same current goes thru both resistors,  equiv resistance is 200 ohms, then using ohms law
I = {{{24/200}}}
I = .12 amps or 120 ma
:
what is the equivalent resistance of the circuit if they are connected in parallel?
In parallel we can use the product over sum formula
R = {{{(r1*r2)/(r1+r2)}}}
R = {{{(100*100)/(100+100)}}}
R = {{{10000/200}}}
R = 50 ohms
:
But if the resistors are equal. you just have to divide the value of one of the resistora by the number of resistors
100/2 = 50