Question

A circuit is built based on the circuit diagram shown.

A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.
What is the current in the 50 Ω resistor?

1.2 A
1.5 A
2.0 A
4.6 A

Answer 1

In a parallel circuit each resistor has the full source voltage across it. So the current through the 50 Ω resistor is

I = V / R = 60 V / 50 Ω = 1.2 A.

Answer: 1.2 A.