Welcome back — been a while! Let's pick up where you left off. Step 1: Identify the circuit type. This is a series circuit. Step 2: Calculate the total resistance ($R_{total}$). In a series circuit, the total resistance is the sum of individual resistances. $R_{total} = R_1 + R_2$ $R_{total} = 10 \, \Omega + 20 \, \Omega$ $R_{total} = 30 \, \Omega$ Step 3: Calculate the total current ($I_{total}$) flowing through the circuit using Ohm's Law ($V = I \times R$). $I_{total} = \frac{V_{total}}{R_{total}}$ $I_{total} = \frac{12 \, V}{30 \, \Omega}$ $I_{total} = 0.4 \, A$ Step 4: Determine the reading on V1. V1 measures the voltage drop across $R_1$. The voltage drop across $R_1$ ($V_1$) is calculated using Ohm's Law: $V_1 = I_{total} \times R_1$ $V_1 = 0.4 \, A \times 10 \, \Omega$ $V_1 = 4 \, V$ The reading on V1 is 4 V. Send me the next one 📸