Referring to figure "B" of the illustration,...

🔍 Key Concepts

• Figure B shows a series circuit (one continuous loop) with R1, R2, and R3 all in line with the source Es. • Review Ohm’s Law:

I = \dfrac{E}{R}

and how total resistance in series is found:

R_T = R_1 + R_2 + R_3

. • In a series circuit, the same current flows through every component; voltage drops change, not the current.

💭 Think About

• Look at figure B and trace the path of current. Does it have more than one path, or only a single loop? How does that affect the current through each resistor? • Using Ohm’s Law, if the supply voltage Es stays constant and you increase the total resistance, what happens to the current for the entire circuit? • Ask yourself whether different resistor values in series cause different currents or different voltage drops across each resistor.

✅ Before You Answer

• Confirm that in series circuits:

R_T = R_1 + R_2 + R_3

and the current

I

is the same through R1, R2, and R3. • Check which options describe how the total circuit current changes when total resistance changes, with voltage held constant. • Eliminate any options that claim different currents in each resistor for a true series circuit.

Referring to figure "B" of the illustration, what statement is true? Illustration EL-0020

The current drawn by the circuit will be inversely proportional to the total resistance of the entire circuit.

The current drawn by an individual resistor will be proportional to the resistance of that resistor.

The current drawn by the circuit will be directly proportional to the total resistance of the entire circuit.

If the resistance values of the individual resistors are uniquely different, each resistor will have a uniquely different current draw.