If a circuit consists of resistors connected in series, its resistanc…

Question

Prompt

If a circuit consists of resistors connected in series, its resistance, in ohms, is equal to the sum of the resistances, in ohms, of all these resistors. A particular circuit consists of

x

identical resistors of type X and

y

identical resistors of type Y, which are connected in series. The resistance

R

, in ohms, of this circuit is given by the equation

R = 13 x + 15

. Which of the following is the best interpretation of

13

in this context?

The total resistance of all resistors of type X in the circuit is 13 ohms.

The resistance of the circuit increases by 13 ohms with each addition of a resistor to the circuit.

The resistance of the circuit increases by 13x ohms with each addition of a resistor of type X to the circuit.

The resistance of the circuit increases by 13 ohms with each addition of a resistor of type X to the circuit.