Problem 12-22 Simple circuit - Part 4 - C

Diagram of circuit with resistors.

In the figure, what are
(a) the current through the \(47\; \Omega\) resistor?
(b) the direction of the current through the \(47\; \Omega\) resistor?
(c) the potential difference \(V_A - V_B\)?  \(V_B - V_A\)?
(d) the voltage across the \(84\;  \Omega\)  resistor?
(e) the potential at point \(C\), if we define the potential at the negative terminal of the battery to be zero?

Accumulated Solution

Circuit diagram

\(I = V/R \\ I = V/R = 6.0/131 = 0.046\; \text{A}    \quad  \text{(answer to part (a))} \\ \text{Current flows + to -, therefore A to B } \quad \text{(answer to part (b))}\)

Correct

\(\Delta V = IR = 0.046 \times 47 = 2.2 \;V\)

\(V_B - V_A\) is:

(A)   \(2.2 \;V\)

(B)   \(-2.2\; V\)