Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
Chapter 35, Problem 21A
Calculate the current in a 12-V battery that powers a single
Expert Solution & Answer
To determine
The current in the battery.
Answer to Problem 21A
The current through the battery is
Explanation of Solution
Given info:
Voltage across the battery,
Resistance of the resistor,
Formula used:
The expression to calculate the current in the battery using Ohm’s law is,
Calculation:
Substitute given values in the above expression.
Conclusion:
The current through the battery is
Chapter 35 Solutions
Conceptual Physics: The High School Physics Program
Ch. 35 - Are all the electrons flowing in a circuit...Ch. 35 - Why must there be no gaps in an electric circuit...Ch. 35 - Distinguish between a series circuit and a...Ch. 35 - If three lamps are connected in series to a 6-volt...Ch. 35 - If one of three lamps blows out when connected in...Ch. 35 - If three lamps are connected in parallel to a...Ch. 35 - If one of three lamps blows out when connected in...Ch. 35 - a. In which case will there be more current in...Ch. 35 - What happens to the total circuit resistance when...Ch. 35 - What is the equivalent resistance of a pair of...
Ch. 35 - Why does the total circuit resistance decrease...Ch. 35 - What does it mean when you say that lines in a...Ch. 35 - What is the function of a fuse or circuit breaker...Ch. 35 - Why will too many electric devices operating at...Ch. 35 - What is meant by a short circuit?Ch. 35 - The resistors in the circuits below are all...Ch. 35 - The circuit below contains resistors R1, R2, and...Ch. 35 - The resistors in the circuits below are 10 each....Ch. 35 - Calculate the equivalent resistance of two 6-...Ch. 35 - Calculate the equivalent resistance (using the...Ch. 35 - Calculate the current in a 12-V battery that...Ch. 35 - Calculate the current in a 12-V battery that...Ch. 35 - Calculate the current in a 48-V battery that...Ch. 35 - Calculate the current in a 48-V battery that...Ch. 35 - One example of a water system is a garden hose...Ch. 35 - Sometimes you hear someone say that a particular...Ch. 35 - Why are the wingspans of birds a consideration in...Ch. 35 - Your lab partner says that a battery provides not...Ch. 35 - Will the current in a lightbulb connected to a...Ch. 35 - To connect a pair of resistors so that their...Ch. 35 - To connect a pair of resistors so that their...Ch. 35 - Hector says that adding bulbs in series to a...Ch. 35 - Consider a pair of flashlight bulbs connected to a...Ch. 35 - Harry asks whether a battery will run down slower...Ch. 35 - As more and more lamps are connected in series to...Ch. 35 - As more and more lamps are connected in parallel...Ch. 35 - If several bulbs are connected in series to a...Ch. 35 - Are automobile headlights wired in parallel or in...Ch. 35 - Why are household appliances almost never...Ch. 35 - In the circuit shown, how do the brightnesses of...Ch. 35 - A number of lightbulbs are to be connected to a...Ch. 35 - Are these circuits equivalent to one another? Why...Ch. 35 - A battery has internal resistance, so if the...Ch. 35 - A three-way bulb uses two filaments to produce...Ch. 35 - How does the line current compare with the total...Ch. 35 - Your friend says that electric current takes the...Ch. 35 - A 60-W bulb and a 100-W bulb are connected in...Ch. 35 - A 30- resistor is connected to a 240-V source. How...Ch. 35 - A lightbulb connected to a 3.0-V battery draws 1.2...Ch. 35 - A lantern battery is connected to a 4- device that...Ch. 35 - A 16- loudspeaker and an 8- loudspeaker are...Ch. 35 - Consider the combination series and parallel...Ch. 35 - How many 4- resistors must be connected in...Ch. 35 - What is the current in the battery of the circuit...Ch. 35 - The rear window defrosters on automobiles are made...Ch. 35 - Prob. 56ACh. 35 - The same voltage V is impressed on each of the...Ch. 35 - Show how the expression given in Question 57, when...Ch. 35 - Obtain several drinking straws. Take a deep breath...
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