In the diagram, the current in the $3-$ resistor is $4$ A $.$ potential difference between points $1$ and $2$ is:

A$.0\mathrm{.}75$ V

B$.0\mathrm{.}8$V

C$.1\mathrm{.}25$ V

D$.12$ V

E$.20$ V

Ans: $C$

$4.$ What is the potential difference $V_B-V_A$ when the $I=1\mathrm{.}5$

A in the circuit segment below?

a$.+22$ V

b$.-22$ V

c$.-38$ V

d$.+38$ V

e$.+2\mathrm{.}0$ V

ANS:

B PTS:

$2$

DIF:

Average