Question

Explain why the resistance of two resistors in series is R1 + R2, while two resistors in parallel give R1R2/(R1 + R2).

Answer #1

1. Two resistors in series can act together as one resistor with
a resistance called the equivalent resistance. If the resistance of
the two resistors are R1 and
R2, where R1 >
R2, rank the two resistance and the equivalent
resistance in order of small to large. Give a conceptual
explanation.
2. Two resistors in parallel can act together as one resistor
with a resistance called the equivalent resistance. If the
resistance of the two resistors are R1 and
R2,...

Two resistors, with resistance R1= 5 ohms and R2=25 ohms are
connected in series in a circuit. The current flow generates heat
at a rate of 1280 J/s in R1. What is the voltage drop across
R2?

Two lightbulbs, one of resistance R1 and the other of
resistance R2, where R1 > R2,
are connected to a battery (a) in parallel and (b) in series. Which
bulb is brighter (dissipates more energy) in each case?
-draw and explain.

Resistor R1=3.7 Ohm is connected in series to parallel combination
of resistors R2=7.9 Ohm and R3=11.1 Ohm. Find equivalent resistance
of this combination. Give answer in Ohms.
Resistor R1=3.7 Ohm is connected in series to parallel combination
of resistors R2=7.9 Ohm and R3=10.7 Ohm. This combination is
connected to the ideal battery of V=10.6 V. Find current through
the R3. Give answer in A.

a) If you have one resistor in series (R1) and two resistors in
parallel (R2 and R3), what value of R3 would make the effective
resistance of the circuit equal to R1 and why does that work?
b) If the effective resistance of the same circuit is 5kOhms,
the length is 0.03m and width is 0.02m and we power the circuit by
making the B field increase by 5T every second, what is the current
in the circuit. Include both...

When two resistors such as R1 and R2 are connected
series, it draws 450 W with a Total current of 5 A. When the
resistors are connected in parallel, they draw 100 W of power for
the same total current. R1 and R2 values how many ohm s? Thank
you!

Calculate the total resistance of a circuit containing three
resistors wired in parallel when R1 = 100 , R2 = 200 O, and R3= 50
O
Consider that you slightly alter the previous circuit so that R1
and R2 are still in parallel, but R3 is now in series with the
pervious two. What is the total resistance of this
circuit?

Consider a simple circuit with two resistors connected in
parallel.
R1 = 30.0 Ohm, R2 = 10.0 Ohm, and a 12 V battery
Calculate the following values to one decimal places (enter just
the number)
The equivalent resistance Ohms
The voltage across resistor R1 V
The voltage across resistor R2 V
The current through resistor R1 A
The current through resistor R2 A
Consider a simple circuit with two resistors connected in
series.
R1 = 1.0 Ohm, R2 = 7.0 Ohm, and a 12 V...

Find the equivalent resistance of a resistive network with three
resistors: R1 = 2 Ω (ohm), R2 = 7 Ω (ohm), and R3 = 9 Ω (ohm),
where the series combination of R1 and R2 is in parallel with R3.
In other words: (R1 in series with R2) in parallel with R3. Quote
your answer in Ω (ohm) rounded to one decimal place.

If two resistors with resistances R1 and
R2 are connected in parallel, as in the figure
below, then the total resistance R, measured in ohms (Ω),
is given by
1/R= 1/R1+1/R2
If R1 and R2 are
increasing at rates of 0.3 Ω/s and 0.2 Ω/s, respectively, how fast
is R changing when R1 = 80 Ω and
R2 = 110 Ω? (Round your answer to three decimal
places.)

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 19 minutes ago

asked 20 minutes ago

asked 29 minutes ago

asked 43 minutes ago

asked 56 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago