Question

a series circuit has two resistors with values r1 = 1.2 ω, r2 = 2.8 ω and has a current of i = 1.5 a. what is the potential of the circuit? 1.3 v 2.4 v 6.0 v 4.5 v

Explanation:

Step1: Calculate total resistance

In a series - circuit, the total resistance $R = R_1+R_2$. Given $R_1 = 1.2\Omega$ and $R_2 = 2.8\Omega$, so $R=1.2 + 2.8=4\Omega$.

Step2: Use Ohm's law

Ohm's law is $V = IR$, where $I$ is current and $R$ is resistance. Given $I = 1.5A$ and $R = 4\Omega$. Then $V=1.5\times4 = 6V$.

Answer:

$6V$