Answered: Chapter 20: Problem 2: Suppose you have…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 12P

See similar textbooks

Similar questions

Why is the following situation impossible? A battery has an emf of = 9.20 V and an internal resistance of r = 1.20 . A resistance R is connected across the battery and extracts from it a power of P = 21.2 W.
A man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and comes into contact with 120-V ac. He does not even feel it since, luckily, he is wearing rubber-soled shoes. What is the minimum resistance of the path tire current follows through the person?
Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
A child’s electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200 in series with a 1.53-V carbon-zinc dry cell having a 0.100- internal resistance. The load resistance is 10.0 . (a) Draw a circuit diagram of the toy and its batteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
Integrated Concepts (a) Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply: (a) To accelerate from rest to 25.0 m/s in 1.00 min? (b) To climb a 2.00 102-m- high hill in 2.00 min at a constant 25.0-m/s speed while exerting 5.00 102 N of force to overcome air resistance and friction? (c) To travel at a constant 25.0-m/s speed, exerting a 5.00 102 N force to overcome air resistance and friction? See Figure 20.44.
Chapter 20: Problem 5: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.225 Ω at 20.0°C. a) How long should the filament be in m, assuming the resistivity of tungsten is 5.60 × 10^-8 Ω⋅m?
4. In the circuit shown in the figure below, the switch S is initially open and the capacitors initially uncharged. What is the current through each resistor (a) just after the switch is closed and (b) a long time after the switch is closed? S 15.0 µF 10.0 2 20.0 V 20.0 Q 30.0 µF 15.0 2
QUESTION 26 Given a circuit with a DC battery connected to a single resistor of resistance 3.00 Ohms. The current through the resistor is I. If the resistor is replaced by another resistor of 30.0 Ohms then what is the ratio of the electric current through the new resistor to I? a. one-tenth b. one c. one-third
18. In the physics laboratory, Oscar measured the resistance between his hands to be 1.80 kΩ. Being curious by nature, he then took hold of two conducting wires that were connected to the terminals of an emf with a terminal voltage of 100.0 V. If one of the conducting wires is grounded and the other has an alternative path to ground through a 10.5-Ω resistor (so that Oscar and the resistor are in parallel), how much current would pass through Oscar if the maximum current that can be drawn from the emf is 1.00 A? ____mA
Help... The current price of gold costs $58,887.31 per kilogram while silver costs $864.19 per kilogram. The density of gold is 19.32 g/cm^3 while silver is 10.49 g/cm^3. 1a) If you desired to create electrical wires that are both 10 m long, how thick or thin would the gold wire be compared to the silver wire if you desired for them to have the same electrical resistance? (i.e. - find the difference in diameters.) 1b) Given the situation in part a, how much more would the gold wire cost in comparison to the silver wire?
Chapter 20: Problem 4: Suppose you have a 19 m long piece of copper wire with a 2.224 mm diameter and a resistivity of 1.72 × 10^-8 Ω⋅m. a) What is the resistance of the copper wire, in ohms?
. A circuit containing seven resistors is connected to a battery with emf equal to 24 V and zero internal resistance as shown in Figure. a) What is the current in the circuit (current going through the battery)? b) What is the voltage across 82 resistor? c) What is the current through 52 resistor? 33.2 202 24 V

SEE MORE QUESTIONS

Recommended textbooks for you

Inquiry into Physics

Physics

ISBN:

9781337515863

Author:

Ostdiek

Publisher:

Cengage

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Physics for Scientists and Engineers with Modern …

Physics

ISBN:

9781337553292

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Inquiry into Physics

Physics

ISBN:

9781337515863

Author:

Ostdiek

Publisher:

Cengage

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Physics for Scientists and Engineers with Modern …

Physics

ISBN:

9781337553292

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Principles of Physics: A Calculus-Based Text

Physics

ISBN:

9781133104261

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

University Physics Volume 2

Physics

ISBN:

9781938168161

Author:

OpenStax

Publisher:

OpenStax

College Physics

Physics

ISBN:

9781938168000

Author:

Paul Peter Urone, Roger Hinrichs

Publisher:

OpenStax College

SEE MORE TEXTBOOKS

Chapter 20: Problem 2: Suppose you have a 2.5 V flashlight. a) What current, in amperes, flows through the bulb of the flashlight when its resistance is 3.65 Ω?