# DC Circuits

Ηλεκτρονική - Συσκευές

7 Οκτ 2013 (πριν από 4 χρόνια και 8 μήνες)

114 εμφανίσεις

DC Circuits

Notes:

Record the values of your resistors.

R
1

= ___________________

R
2

= ___________________

Part 1
: Build the circuit

a) Vary V from 0 V to 25 V (roughly equal spacing), recording the current and voltage for each.

b) Plot
V ve
rsus I on paper or in Excel. From your graph determine what the resistance value R is.

c) Calculate the % difference of this value of R from the value recoded at the top of the page.

Part 2
: Build the circuit

a) Vary V from 0 V to 25 V (rou
ghly equal spacing), recording the current and voltage for each.

b) Plot V versus I on paper or in Excel. From your graph determine what the
equivalent resistance seen
by the voltage supply
.

c) Calculate the % difference
of this value from the value

you expect from the

recoded
resistances
at
the top

of the page
.

Show your calculation of this equivalent resistance.

Part 3
: Build the circuit

a) Vary V from 0 V to 25 V (roughly equal spacing), recording
al three

current
s

and
the
voltage f
or each.

b) Do the three currents “add up” correctly? How do you tell?

c
) Plot V versus I

(for the voltage supply)

on paper or in Excel. From your graph determine what the
equivalent resistance seen by the voltage supply.

d
) Calculate the % differe
nce of this value from the value you expect from the recoded resistances at
the top of the page.

Show your calculation of this equivalent resistance.

Q1:

Explain.

Q2: