Question

. A series-parallel combination of resistors is created from 4 resistors, there is a 45 ohm resistor followed in series by a parallel combination of a 30 Ohm resistor on one branch, and a 10 Ohm and a 15 Ohm resistors in series on the other branch. The whole combination is attached to a 12 V battery. a) find the net resistance of the resistors to the current from the battery. b) What is the current in the 45 Ohm resistor. c) What is the voltage across the 45 Ohm resistor? d) What is the voltage across the parallel combination of resistors? e) Find the currents through each of the remaining resistors and the voltages across each resistor. f) Calculate the power dissipated by each resistor. What is the net power dissipated by all the resistors? g) If you did the calculations correctly, then the answer for the net power being converted to heat in the resistors should be equal to the square of the net current out of the battery times the net resistance of the resistors. If it is not, rework the problem until it does.

Answer #1

The current voltage and power in circuit

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.

Resistor R1=3.7 Ohm is connected in series to parallel
combination of resistors R2=7.9 Ohm and R3=11.1 Ohm. This
combination is connected to the ideal battery of V=10.6 V. Find
voltage drop on the resistor 7.9. Give answer in V.

A 3
ohm resistor is connected in parallel with a 6 ohm resistor. This
combination is connected in series with a 4 ohm resistor. The
resistors are connected to a 12 V battery. How muxh power is
dissipated in the 3 ohm resistor?

Resistors in Series and Parallel Question
(a) Suppose a 200 Ohm and a 300 Ohm resistor are in series,
and 10 volts is applied across the combination. What is the
potential difference across each resistor separately? (This
combination is called a “voltage divider”.)
(b) What rule of proportionality is illustrated here?

Resistor R1=3.0 Ohm is connected in series to a parallel
combination of R2=9.0 Ohm and R3=7.0 Ohm. The combination of three
resistors is connected to a real battery of emf 12.0 V. Find
internal resistance of a battery if current through a battery is
0.40 A. Give answer in Ohms.

A 4 Ohm resistor is connected in series to a parallel connection
of a 5 Ohm and a 10 Ohm resistor. The combination is connected to a
23 V battery.
a) What is the current through the 5 Ohm resistor?
b) What is the power lost in the 4 Ohm resistor?
c) What is the potential difference across the 4 Ohm
resistor?

Resistors R 1 = 20 ohms, R 2 = 40 ohms, and R 3 = 60 ohms, are
all connected in series with one another.
The combination of three resisters in series is now connected in
parallel with a 240 ohm
resistor, and the resulting circuit is connected across an ideal
62.5 volt battery.
a) Find the equivalent resistance connected across the
battery.
b) Find the potential across each of the four resistors, and the
current through each.
c) Find...

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...

Two resistors 1.00 ohms and 2.00 ohms are connected in parallel,
then they are connected to 3.00 ohms resistor and a 9.00 V battery
in series to complete a circuit.
a. What is the equivalent resistance of this circuit?
b. What is the current through the 1.00 Ohms resistor?
c. What is the voltage on 3.00 ohms resistor?
d. What is power dissipated on 2.00 ohm resistor?

Series/Parallel Circuits: When unequal resistors are connected
in series across an ideal battery,
the same power is dissipated in each one.
the potential difference across each is the same.
the equivalent resistance of the circuit is equal to the
average of all the resistances.
the current flowing in each is the same.
the equivalent resistance of the circuit is less than that of
the smallest resistor.

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