Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 25, Problem 93P
To determine
The value of resistance.
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Chapter 25 Solutions
Physics for Scientists and Engineers
Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Prob. 3PCh. 25 - Prob. 4PCh. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10P
Ch. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - Prob. 16PCh. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Prob. 21PCh. 25 - Prob. 22PCh. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - Prob. 28PCh. 25 - Prob. 29PCh. 25 - Prob. 30PCh. 25 - Prob. 31PCh. 25 - Prob. 32PCh. 25 - Prob. 33PCh. 25 - Prob. 34PCh. 25 - Prob. 35PCh. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - Prob. 39PCh. 25 - Prob. 40PCh. 25 - Prob. 41PCh. 25 - Prob. 42PCh. 25 - Prob. 43PCh. 25 - Prob. 44PCh. 25 - Prob. 45PCh. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - Prob. 50PCh. 25 - Prob. 51PCh. 25 - Prob. 52PCh. 25 - Prob. 53PCh. 25 - Prob. 54PCh. 25 - Prob. 55PCh. 25 - Prob. 56PCh. 25 - Prob. 57PCh. 25 - Prob. 58PCh. 25 - Prob. 59PCh. 25 - Prob. 60PCh. 25 - Prob. 61PCh. 25 - Prob. 62PCh. 25 - Prob. 63PCh. 25 - Prob. 64PCh. 25 - Prob. 65PCh. 25 - Prob. 66PCh. 25 - Prob. 67PCh. 25 - Prob. 68PCh. 25 - Prob. 69PCh. 25 - Prob. 70PCh. 25 - Prob. 71PCh. 25 - Prob. 72PCh. 25 - Prob. 73PCh. 25 - Prob. 74PCh. 25 - Prob. 75PCh. 25 - Prob. 76PCh. 25 - Prob. 77PCh. 25 - Prob. 78PCh. 25 - Prob. 79PCh. 25 - Prob. 80PCh. 25 - Prob. 81PCh. 25 - Prob. 82PCh. 25 - Prob. 83PCh. 25 - Prob. 84PCh. 25 - Prob. 85PCh. 25 - Prob. 86PCh. 25 - Prob. 87PCh. 25 - Prob. 88PCh. 25 - Prob. 89PCh. 25 - Prob. 90PCh. 25 - Prob. 91PCh. 25 - Prob. 92PCh. 25 - Prob. 93PCh. 25 - Prob. 94PCh. 25 - Prob. 95PCh. 25 - Prob. 96PCh. 25 - Prob. 97PCh. 25 - Prob. 98PCh. 25 - Prob. 99PCh. 25 - Prob. 100PCh. 25 - Prob. 101PCh. 25 - Prob. 102PCh. 25 - Prob. 103PCh. 25 - Prob. 104PCh. 25 - Prob. 105PCh. 25 - Prob. 106PCh. 25 - Prob. 107PCh. 25 - Prob. 108PCh. 25 - Prob. 109PCh. 25 - Prob. 110PCh. 25 - Prob. 111PCh. 25 - Prob. 112PCh. 25 - Prob. 113PCh. 25 - Prob. 114PCh. 25 - Prob. 115PCh. 25 - Prob. 116PCh. 25 - Prob. 117PCh. 25 - Prob. 118PCh. 25 - Prob. 119PCh. 25 - Prob. 120P
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- How many different resistance valuescan be created by combining three unequal resistors? (Don’t count possibilities in which not allthe resistors are used, i.e., ones in which there iszero current in one or more of them.)arrow_forwardA 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipatedinside the battery? (c) At what rate (in ºC/min ) will itstemperature increase if its mass is 20.0 kg and it has aspecific heat of 0.300 kcal/kg ⋅ ºC , assuming no heatescapes?arrow_forwardAn astronaut uses a small motor, rated at 93% efficient, that is connected to a 12-volt [V] power supply on Mars. The motor has a resistance rating of 2.3 kiloohms [kΩ]. How long will it take to produce 3.4 calories [cal] of energy in units of minutes [min]?arrow_forward
- Starting from Ohm’s law, show that E = Jρ, where E is themagnitude of the electric field (assumed constant) and J = I/Ais called the current density. The result is in fact true in general.arrow_forwardWhy is the current in an incandescent bulb greater immediately after it is turned on than it is a few moments later? (That’s why bulbs usually burn out just as they are being turned on.)arrow_forwardA person with a body resistance of 10 kΩkΩ between his hands accidentally grasps the terminals of a 14.0 kVkV power supply. If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the situation just described to be 1.25 mAmA or less?arrow_forward
- A portable coffee heater supplies a potential difference of12.0 V across a Nichrome heating element with a resistanceof 2.00 Ω. (a) Calculate the power consumed by the heater.(b) How many minutes would it take to heat 1.00 kg of coffeefrom 20.0°C to 50.0°C with this heater? Coffee has a specificheat of 4 184 J/(kg ⋅ °C). Neglect any energy losses to theenvironment.arrow_forwardA lightning flash during a thunderstorm can consist of one to tens of individual strokes, each with a duration between 10 and 100 milliseconds. Peak currents in a stroke can be as high as 20 kiloamperes. If a specific lightning flash has 10 separate strokes each lasting 50 milliseconds and carrying an average current of 8 kiloamperes, about how much charge gets transferred from the earth to the sky or vice versa? (Hint: the answer provided is 4000 C)arrow_forwardThe interior of thehuman body has an electrical resistivity of 0.15 Ω # m. (a) Estimatethe resistance for current flowing the length of your index finger.(For this calculation, ignore the much higher resistivity of yourskin.) (b) Your muscles will contract when they carry a currentgreater than 15 mA. What voltage is required to produce this current through your finger?arrow_forward
- A galvanometer has a coil resistance of Rgalv=97.2 Ω. It is to be made into an ammeter with a full‑scale deflection equal to I=1.45 A. If the galvanometer deflects full scale for a current of Igalv=235 mA, what size shunt resistor should be used?arrow_forwardSuppose that you wish to apply a 0.25-V potential differencebetween two points on the human body. The resistance isabout 1800 Ω and you only have a 1.5-V battery. How canyou connect up one or more resistors to produce the desiredvoltage?arrow_forwardIntegrated Concepts. A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. At what rate (in oC/min ) will its temperature increase if its mass is20.0 kg and it has a specific heat of 0.300 kcal/kg. oC, assuming no heat escapes?arrow_forward
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