Part A The terminals of a 0.70 V watch battery are connected by a 90.0-m-long gold wire with a diameter of 0.100 mm You may want to review (Pages 755 - 759) What is the current in the wire? Express your answer using three significant figures. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Soil resistivity. V AE ? I = Submit Request Answer

Part A The terminals of a 0.70 V watch battery are connected by a 90.0-m-long gold wire with a diameter of 0.100 mm You may want to review (Pages 755 - 759) What is the current in the wire? Express your answer using three significant figures. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Soil resistivity. V AE ? I = Submit Request Answer

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 16P

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(a) A defibrillator sends a 6.00-A current through the chest of a patient by applying a 10,000-V potential as in the figure below. What is the resistance of the path? (b) The defibrillator paddles make contact with the patient through a conducting gel that greatly reduces the path resistance. Discuss the difficulties that would ensue if a larger voltage were used to produce the same current through the patient, but with the path having perhaps 50 times the resistance. (Hint: The current must be about the same, so a higher voltage would imply greater power. Use this equation for power: P=I2 RP = .)
Currents of approximately 0.06 A can be potentially fatal. Currents in that range can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a dry human body can be approximately 100 k . (a) What voltage can cause 0.06 A through a dry human body? (b) When a human body is wet, the resistance can fall to 100 . What voltage can cause harm to a wet body?
A nichrome rod that is 3.00 mm long with a cross sectional area of 1.00 mm2 is used for a digital thermometer, (a)What is the resistance at room temperature? (b)What is the resistance at body temperature?
A car battery with a 12-V emf and an internal resistance of 0.050 is being charged with a current of 60 A. Note that in this process, the battery is being charged. (a)What is the potential difference across its terminals? (b)At what rate is thermal energy being dissipated in the battery? (c) At what rate is electric energy being converted into chemical energy?
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?
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T T0)] (Eq. 17.7), where is the temperature coefficient of resistivity. (a) Show that a more precise result, which includes the length and area of a wire change when it is heated, is R=R0[1+(TT0)][1+(TT0)][1+2(TT0)] where is the coefficient of linear expansion. (See Topic 10.) (b) Compare the two results for a 2.00-m-long copper wire of radius 0.100 mm, starting at 20.0C and heated to 100.0C.
Check Your Understanding Handheld calculators often use small solar cells to supply the energy required to complete the calculations needed to complete your next physics exam. The current needed to run your calculator can be as small as 0.30 mA. How long would it take for 1.00 C of charge to flow from the solar cells? Can solar cells be used, instead of batteries, to stall traditional internal combustion engines presently used in most cars and trucks?
Hi, can you help me to understand this problem by helping me through STEP BY STEP solution. The answer is given in the photo that i provide and here is the problemDetermine the resistance of a 1-mile length of 12-gauge copper wire. Given: 1 mile = 1609 meters and diameter = 0.2117 cm.
The human body can exhibit a wide range of resistancesto current depending on the path of the current, contactarea, and sweatiness of the skin. Suppose the resistance acrossthe chest from the left hand to the right hand is 1.0 x 106 Ω.(a) How much voltage is required to cause possible heartfibrillation in a man, which corresponds to 500 mA of directcurrent? (b) Why should rubber - soled shoes and rubbergloves be worn when working around electricity?
help me with the following question and make sure 100% the answer is correct, thank you A gold wire 6.16 mm long and of diameter 0.820 mmmm carries a current of 1.16 AA . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Electrical hazards in heart surgery. Part A. Find the resistance of this wire. Express your answer in ohms. Part B. Find the potential difference between its ends. Express your answer in volts.
The 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?