Question

Three resistors are used in an electric saw. Each resistor has a resistance of 100 Ω each.

Two of the resistors are connected parallel to each other. A third is connected in series

with the other two. A current of 0.2 A flows through a resistor in one branch of the

parallel resistors. Calculate total parallel resistance

Answer 1

for total parallel resistance:

$1/r=1/r_1+1/r_2=2/100=1/50$

$r=50$ $\Omega$