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

The electronics supply company where you work has two different
resistors, R1 and R2, in its inventory, and you must measure the
values of their resistances. Unfortunately, stock is low, and all
you have are R1 and R2 in parallel and in series - and you can't
separate these two resistor combinations. You separately connect
each resistor network to a battery with emf 45.0 V and negligible
internal resistance and measure the power P supplied by the battery
in both...

1)Electrical resistance for a wire of any size can be calculated
using the relation: R = pL/A
where R = resistance ?, p = resistivity (?-cm), L = wire length
(cm),
p = 112 u? cm. For a 10-m length of 16-gauge (diameter = 1.291
mm) nichrome wire, find the resistance. If a current of 4 A flows
in the wire, find the voltage drop and power dissipation.
2)A standard power value for a household incandescent lightbulb
is 60 W....

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.

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