Question

For part 2 I was told that The circuit below will accommodate up to three resistors in series. Explore the circuit. It is a series circuit with ammeters reading amps hooked in series and volt meters hooked in parallel. The circuit has one resistor and two spaces to accommodate resistors. Enter an R to add resistor. Enter a X to remove a resistor. By default, the cells read "enter R for Resistor" so I did that and tried 3 volts( the pics below) then I was asked Complete each of the following parts:(a) Draw the circuit diagram for the three resistors in series that you assembled in Part 2. Label the voltage and the resistances of each resistor.(b) For the three resistors in series, how did the measured total voltage, current across each resistor, total current, and voltage drop across each resistor compare to the values that you calculated?(c) How did the equivalent resistance, voltage drop across each resistor, total current, and total voltage change as you added resistors in series to the circuit?The resistors value (ohms) is 3Power output volts ( 15,10,5) I put three different ones but if I only need to use one then 15 This is 11th grade physics btw

Answer 1

(a) Draw the circuit diagram for the three resistors in series that you assembled in Part 2. Label the voltage and the resistances of each resistor

The diagram will look like the following:

As all the resistors are equal, their voltage drop will also be equal, which will be a third of the input voltage

(b) For the three resistors in series, how did the measured total voltage, current across each resistor, total current, and voltage drop across each resistor compare to the values that you calculated?

The value of the measured voltage on each resistor can be seen as to be exactly as calculated, which is 1/3 of the voltage input. The total current can be calculated as:

$I=\frac{V}{R+R+R}=\frac{15}{3*3}=\frac{15}{9}\approx1.7A$

Which is the one seen on the amperimeter

(c) How did the equivalent resistance, voltage drop across each resistor, total current, and total voltage change as you added resistors in series to the circuit?

The voltage drop on each resistor will decrease once you add more resistors, as there will be more total resistance, and thus less current. As the resistance of each resistor is constant, the relation V=RI given by Ohm's law will be reduced.