Posted by alice on Tuesday, May 31, 2011 at 3:43pm.
Resistors R1= 10ohms, R2= 40 ohms and R3= 70 ohms are connected in series. The total resistance in ohms of this combination is:
A)0 B)120 C)28000 D) not enough info

PHY [noncalc]  MathMate, Tuesday, May 31, 2011 at 3:57pm
Resistors in series have an equivalent resistance of the sum of the individual resistances.
Here we have three resistors with individual resistances equal to 10, 40 and 70Ωs. What is the total resistance?

PHY [noncalc]  Anonymous, Tuesday, May 31, 2011 at 4:47pm
do I just add them up?
10+40+70=120

PHY [noncalc]  MathMate, Tuesday, May 31, 2011 at 5:03pm
Right!
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