Question

One 10.0 Ω resistor is wired in series with two 10.0 Ω resistors in parallel. A 45.0 V battery supplies power to the circuit. What is the total current through the circuit?

A. 3.0 A
B. 1.5 A
C. 0.75 A
D. 0.33 A

Answer 1

equilvalent resistance is 30?

Answer 2

no, it is:
\[\Large {R_{EQ}} = 10 + \frac{1}{{\frac{1}{{10}} + \frac{1}{{10}}}} = ...\Omega \]

Answer 3

oh oops ! so it is 5!

Answer 4

are you sure?

Answer 5

oh oops i did not see the 10 in front! so it is 15!

Answer 6

correct!

Answer 7

now, the requested current is:
I=45/15=...amperes

Answer 8

3! so our solution is choice A? :O

Answer 9

that's right!

Answer 10

yay! thank you!!:D

Answer 11

:)