Experiment #1 Worksheet (Page 1)

Watch the videos on eCampus and then answer the following questions:

1. Using Ohm’s Law, Calculate the resistor values, given the DC voltages and currents (pay attention to Engineering prefixes “kilo” (k) and “milli” (m) and use Engineering prefixes in your answers, where appropriate):

V=20V, I=10 A, R = ?.

V=2V, I=400 mA, R =

?.

V=1.2 kV, I=400A, R =

?.

2. Equivalent resistance of series resistors: Consider the circuits below.

There is a resistance, RE, that is equivalent to the three resistors in series. Assuming the voltage in both circuits is

the same, RE is equivalent to the sum of the resistance values of the three resistors.

Resistors in Series: ???? = ??1 + ??2 + ??3 +?

Calculate the Equivalent Resistance if the 3 resistors in Part 1 were connected in series.

RE =

?

There is a resistance, RP, that is equivalent to the three resistors in parallel. Assuming the voltage in both circuits is

the same, RP is calculated as:

Resistors in Parallel: ???? = 1/ [( 1 ??1 ? ) + (1 ??2

? ) + (1 ??3 ? ) +?]

Experiment #1 Worksheet (Page 2)

Calculate the Equivalent Resistance if the 3 resistors in Part 1 were connected in Parallel. (Check your

work: Rp will always be smaller than the smallest of the parallel resistors!)

RP =

?

3. For the Voltage signal shown above:

What is the value of Vp?

What is the value of Vpp?

What is VRMS?