Three 6-Ω resistors are connected in parallel to a 15-V battery.What is the current in any one of the resistors?
A) 21 A
B) 6.3 A
C) 2.5 A
D) 90 A
E) 9 A

Question

Three 6-Ω resistors are connected in parallel to a 15-V battery.What is the current in any one of the resistors?
A) 21 A
B) 6.3 A
C) 2.5 A
D) 90 A
E) ​9 A

Quizplus · Accepted Answer

The total resistance in the circuit is:

1/R_total = 1/6 Ω + 1/6 Ω + 1/6 Ω = 3/6 Ω = 0.5 Ω

Using Ohm's law:

V = IR
I = V/R

Thus, the current in any one of the resistors is:

I = V/R = 15 V / 6 Ω = 2.5 A

Therefore, the best choice is C.

Three 6-Ω Resistors Are Connected in Parallel to a 15-V