Question

There is a single path for electrons.

The current decreases when additional resistors are added.

The current will be the same in each resistor.


These statements BEST describe a(n) _____________ circuit.


A) closed


B) open


C) parallel


D) series

Answer 1

D I just had it on Usa Test Prep

Step-by-step explanation:

Answer 2

D. series

Step-by-step explanation:

If a series circuit has multiple resistances
`R_1,R_2,` and
`R_3` , and has voltage source
`V`, then the current
`I` is given by

`I=(V)/(R_1+R_2+R_3)`

From this equation we see that as we add more and more resistors to the circuit, more terms are added in the denominator, which results in a decreased current
`I`.

In a series circuit there is only one path for the electrons to flow, and by the principle of the continuity of current, the current must be same throughout the path—the current cannot jam just as flowing water cannot collect in the pipe—what goes in has to come out.

This means the current cannot jam in the resistors, and therefore it must be the same in every resistor no matter how many resistors you add.