Current, Resistance, and CircuitsPLS ANSWER NO.5 1. Three resistors are connected in series to a 24-V battery, and an ammeter inthe circuit reads 0.50 A. The first resistor is rated at 22 ohms, and the second at8 ohms. Find the(a) total resistance;(b) resistance of the third resistor; and(c) potential difference across the third resistor.2. We would like to make a 600-ohm resistor out of Nichrome wire with a cross-sectional area of 3.0 x 103 square centimeter. If the resistivity of Nichrome is110 x 106 ohm-centimeters, how long should the wire be?3. In a circuit, a variable resistor is to be connected across a potential differenceof 60 V to allow the current to be adjusted in the range from 40 mA to 100 mA.Over what range must the resistance vary?4. Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source.Find (a) the total power delivered to the three bulbs and (b) the potentialdifference across each.R1120 VR2R3Assume the resistance of each bulb is constant.5. In the figure below, with an emf equal toHow much energy is dissipated by all four resistors in 1 min?2.0 V, R, = 6.0N and R2 = 18.0 N.R1R2R2R2

To be given emf V=12 VR1=6 ΩR2=18 Ωtime, t= 1m

Answered: 5. In the figure below, with an emf…

5. In the figure below, with an emf equal to 12.0 V, R, = 6.0 N and R2 = 18.0 N. How much energy is dissipated by all four resistors in 1 min? R1 R2 R2

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

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Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

Current, Resistance, and Circuits PLS ANSWER NO.5

1. Three resistors are connected in series to a 24-V battery, and an ammeter in
the circuit reads 0.50 A. The first resistor is rated at 22 ohms, and the second at
8 ohms. Find the
(a) total resistance;
(b) resistance of the third resistor; and
(c) potential difference across the third resistor.
2. We would like to make a 600-ohm resistor out of Nichrome wire with a cross-
sectional area of 3.0 x 103 square centimeter. If the resistivity of Nichrome is
110 x 106 ohm-centimeters, how long should the wire be?
3. In a circuit, a variable resistor is to be connected across a potential difference
of 60 V to allow the current to be adjusted in the range from 40 mA to 100 mA.
Over what range must the resistance vary?
4. Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source.
Find (a) the total power delivered to the three bulbs and (b) the potential
difference across each.
R1
120 V
R2
R3
Assume the resistance of each bulb is constant.
5. In the figure below, with an emf equal to
How much energy is dissipated by all four resistors in 1 min?
2.0 V, R, = 6.0N and R2 = 18.0 N.
R1
R2
R2
R2

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