Question

It is observed that cylindrical resistors with different resistance valued may be of the same size. Explain how the resistance is changed for a cylindrical ceramic resistor without changing its size.

Answer #1

How many 0.5W resistors, each of the same resistance, must be
used to produce an equivalent 2.8 kΩ , 4.0 W resistor? What is the
resistance of each, and how must they be connected? Do not exceed P
= 0.5W in each resistor.
Part A. How must they be connected?
Part B. How many 0.5W resistors connected in series, each of the
same resistance, must be used to produce an equivalent 2.8 kΩ , 4.0
W resistor?
Part C. What...

You are connecting several resistors of different resistance to
a battery. Which statement is correct?
A. If the resistors are connected in series, currents through
all resistors are the same, but potential differences across each
resistor are different;
B. If the resistors are connected in series, currents through
all resistors are different, but potential differences are the
same;
C. If the resistors are connected in parallel, currents through
all resistors are the same, but potential differences are
different;
D. If...

How many 0.5WW resistors connected in parallel, each of the same
resistance, must be used to produce an equivalent 4.0 kΩkΩ , 4.5 WW
resistor?

Three resistors are connected in series across a battery. The
value of each resistance and its maximum power rating are as
follows: 5.4Ω and 28.3 W, 33.8Ω and 9.33 W, and 15.1Ω and 12.6 W.
(a) What is the greatest voltage that the battery can have without
one of the resistors burning up? (b) How much power does the
battery deliver to the circuit in (a)?

Three resistors are connected in series across a battery. The
value of each resistance and its maximum power rating are as
follows: 4.2Ω and 22.5 W, 25.6Ω and 13.1 W, and 21.7Ω and 10.4 W.
(a) What is the greatest voltage that the
battery can have without one of the resistors burning up?
(b) How much power does the battery deliver to
the circuit in (a)?

Three resistors are connected in series across a battery. The
value of each resistance and its maximum power rating are as
follows: 5.3Ω and 23.4 W, 41.6Ω and 11.2 W, and 12.7Ω and 10.9 W.
(a) What is the greatest voltage that the battery can have without
one of the resistors burning up? (b) How much power does the
battery deliver to the circuit in (a)?

When resistors are connected in parallel, how does the amount of
current a resistor receives depend on its resistance? i.e. Do
larger resistances receive more or less current than smaller
resistances? Explain your reasoning

Suppose random samples of the same size are taken from two
different populations with the same mean but different standard
deviations. If you make two confidence intervals, one from each
sample, and these intervals have the same confidence level, how
will the confidence intervals differ? Explain.

Describe three different ways how a copper wire can be made to have
the same resistance as a certain piece of aluminum wire. You cannot
change anything about the aluminum wire, but are free to alter the
copper wire as needed (but it must remain copper).

1. Three objects have the same volume, one spherical, one
rectangular, and the other cylindrical. If you put these 3 objects
under water, how do their buoyant upward forces compare?
A.
According to Archimedes’ Principle, they are all subject to the
same amount of buoyant forces because they have the same volume
B.
The cylindrical object gets the most buoyant force because it
has a longer shape
C.
The rectangular object gets the most buoyant force because of
its flat...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 18 minutes ago

asked 22 minutes ago

asked 22 minutes ago

asked 26 minutes ago

asked 30 minutes ago

asked 35 minutes ago

asked 49 minutes ago

asked 49 minutes ago

asked 49 minutes ago

asked 49 minutes ago

asked 52 minutes ago