Problem 12-14 Ohm's law

Diagram of circuit with current of 2.38 A

In the circuit above the current is \(2.38\; A\).­ What are

(a) the resistance \(R\)?
(b) the direction of the current through the resistor?
(c) the potential difference \(V_A - V_C\)?

[Ans. (a) \(1.36\; \Omega\)   (b) \(\text{toward top of diagram}\)   (c) \(3.24\; V\)]

 What is the voltage across the resistor \(R\)?

(A)  \(2.38 \;V\)

(B)  \(0\)

(C)  \(3.24\; V\)