Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 13, Problem 21CQ
In the circuit shown, the circle with an A in it represents an ammeter. Which of these statements is correct? Comment on each.
a. The meter is in the correct position for measuring the current through R.
b. No current will flow through the meter, so it will have no effect.
c. The meter will draw a significant current from the batter).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A technician is attempting to determine the currents through each branch of the circuit in the figure below. The technician has assumed the currents are in the directions shown in the figure. The technician has found that the current I1 is 3.22 A and the values of and R are unknown.
A. What is the magnitude of the current I2 (in A)?
B. A. What is the magnitude of the current I3 (in A)?
The following figure shows a 4.0-cm-wide plastic film being wrapped onto a 2.0-cm-diameter roller that turns at 98 rpm . The plastic has a uniform surface charge density of -2.1 nC/cm2 . (Figure 1)
Part A: What is the current of the moving film?
Part B: How long does it take the roller to accumulate a charge of -10 μC?
Kirchhoff's Law
Can all of the currents going into the junction shown below be positive? Explain.
Chapter 13 Solutions
Physics of Everyday Phenomena
Ch. 13 - Two arrangements of a battery, bulb, and wire are...Ch. 13 - Suppose you have two wires, a battery, and a bulb....Ch. 13 - In a simple battery-and-bulb circuit, is the...Ch. 13 - Are electric current and electric charge the same...Ch. 13 - When an axon is stimulated, a voltage spike or...Ch. 13 - Does the signal in an axon travel at the same...Ch. 13 - Consider the circuit shown, where the wires are...Ch. 13 - Consider the circuit shown. Could we increase the...Ch. 13 - Two circuit diagrams are shown. Which one, if...Ch. 13 - Suppose we use an uncoated metal clamp to hold the...
Ch. 13 - Consider the two signs shown, which are located in...Ch. 13 - If we decrease the potential difference across a...Ch. 13 - Prob. 13CQCh. 13 - When a battery is being used in a circuit, will...Ch. 13 - Two resistors are connected in series with a...Ch. 13 - In the circuit shown below. R1, R2,. and R3 are...Ch. 13 - In the circuit shown in question 16, which of the...Ch. 13 - If we disconnect R2, from the rest of the circuit...Ch. 13 - When current passes through a series combination...Ch. 13 - In the circuit shown, the circle with a V in it...Ch. 13 - In the circuit shown, the circle with an A in it...Ch. 13 - Which will normally have the larger resistance, a...Ch. 13 - Is electric energy the same as electric power?...Ch. 13 - If the current through a certain resistance is...Ch. 13 - Prob. 25CQCh. 13 - What energy source increases the potential energy...Ch. 13 - Prob. 27CQCh. 13 - Prob. 28CQCh. 13 - Prob. 29CQCh. 13 - Prob. 30CQCh. 13 - Prob. 31CQCh. 13 - Prob. 32CQCh. 13 - Why does a bimetallic strip bend when the...Ch. 13 - A charge of 28 C passes at a steady rate through a...Ch. 13 - A current of 4.5 A flows through a battery for 3...Ch. 13 - Prob. 3ECh. 13 - A current of 1.5 A is flowing through a resistance...Ch. 13 - A current of 0.522 A flows through a resistor with...Ch. 13 - Four 22 resistors are connected in series to an...Ch. 13 - A 47 resistor and a 28 resistor are connected in...Ch. 13 - In the circuit shown, the 1 resistance is the...Ch. 13 - Three resistors are connected to a 12-V battery as...Ch. 13 - Two resistors, each having a resistance of 40 ....Ch. 13 - Prob. 11ECh. 13 - Three identical resistances, each 30 , are...Ch. 13 - A 9-V battery in a simple circuit produces a...Ch. 13 - A 80 resistor has a voltage difference of 12 V...Ch. 13 - A 75-W light bulb operates on an effective ac...Ch. 13 - A toaster draws a current of 9.0 A when it is...Ch. 13 - A clothes dryer uses 6600 W of power when...Ch. 13 - In the circuit shown, the internal resistance of...Ch. 13 - Three 36 lightbulbs are connected in parallel to...Ch. 13 - In the circuit shown, the 8-V battery is opposing...Ch. 13 - In the combination of 12 resistors shown in the...Ch. 13 - A 850-W toaster, a 1200-W waffle iron, and a...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A 12-V car battery is used to power a 20.00-W, 12.00-V lamp during the physics club camping trip/star party. The cable to the lamp is 2.00 meters long, 14-gauge copper wire with a charge density of n=9.501028m3 . (a) What is the current draw by the lamp? (b) How long would it take an electron to get from the battery to the lamp?arrow_forward. An electric car is being designed to have an average power output of 4,000 W for 2 h before needing to be recharged. (Assume there is no wasted energy.) (a) How much energy would be stored in the charged batteries? (b) The batteries operate on 30 V. What would the current be when they are operating at 4,000 W? (c) To be able to recharge the batteries in 1 h, how much power would have to be supplied to them?arrow_forwardConsider the circuits shown below, (a) What is the current through each resistor in part (a)? (b) What is the current through each resistor in part (b)? (c) What is the power dissipated or consumed by each circuit? (d) What is the power supplied to each circuit?arrow_forward
- The human body can exhibit a wide range of resistances to current depending on the path of the current, contact area, and sweatiness of the skin. Suppose the resistance across the chest from the left hand to the right hand is 1.0 106 . (a) How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 500 mA of direct current? (b) Why should rubber-soled shoes and rubber gloves be worn when working around electricity?arrow_forwardConsider the circuit shown in Figure P28.9. Find (a) the current in the 20.0- resistor and (b) the potential difference between points a and b.arrow_forwardUsing Kirchhoffs rules, (a) find (he current in each resistor shown in Figure P28.51 and (b) find the potential difference between points c and f.arrow_forward
- A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like protons or electrons. You may have seen it used to make human hair stand on end or produce large sparks. One application of the Van de Graaff generator is to create X-rays by bombarding a hard metal target with the beam. Consider a beam of protons at 1.00 keV and a current of 5.00 mA produced by the generator, (a) What is the speed of the protons? (b) How many protons are produced each second?arrow_forwardA slab of metal of volume V is made into a rod of length L. The rod carries current I when the electric field inside is E. Find the resistivity of the metal ρ. Expess your answer in terms of the given quantities. The rod is now stretched so that its length is doubled. If the electric field remains the same, what is the new current I′ in the rod? Express your answer in terms of some or all of the quantities given in the problem introduction. A piece of copper is made into a rod with a square cross-section. The side of the square is 2.00 centimeters. The resistivity of copper is 1.7⋅10−8 Ω⋅m. An unknown electric field E, directed along the rod, creates a current of 12.0 amperes through the rod. Find the magnitude of E. Use two significant figures in your answer. Express your answer in newtons per coulomb.arrow_forwardTwo copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire? Does their drift speed increase, decrease, or stay the same? If the drift speed changes, what is the force that causes the change? Explain your reasoning.arrow_forward
- What is the voltage change if you cross a resistor R in the same direction as the current I? (This means you want Vf-Vi, where Vi is the voltage where the current enters the resistor and Vf, is the voltage where the current leaves the resistor.) What is the voltage change if you cross a resistor R opposite the direction of the current I? (in this case, Vi is the voltage where the current leaves the resistor, and Vf is the voltage where the current enters the resistor.) Which answer is correct? +IR in both cases +IR in the first case and -IR in the second case. +IR in both cases -IR in the first case and +IR in the second case.arrow_forwardQ11: From the equation (resistance in series circuit) Rt = R1 +R2 +R3… and I=V/R, how will you describe the current when resistance in series circuit increases? a. the current also increasesb. the current decreasesc. the current fluctuatesd. the current stays the same Q12: How is an ammeter connected in a circuit to measure current flowing through it?a. An ammeter is connected in series in a circuit to measure current flowing through it.b. An ammeter is connected in parallel in a circuit to measure current flowing through it.c. An ammeter can be connected either in series or in parallel in a circuit to measure current through it.d. An ammeter can be connected anywhere in the circuit.arrow_forwardIn the circuit shown, the potential difference VA=VB=26.0 V and the resistance R1=R2=R3=R4=255 Ω. The arrows for currents IA and IB indicate the direction of positive current flow. The arrows do not necessarily indicate the direction of the actual current flow at those points. Determine the current ?A. Determine the current ?B.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY