Referring to Example 21-13 Suppose R 1 = R 2 = 225 Ω and R 3 = R . The emf of the battery is 12.0 V. (The resistor numbers are given in the Interactive Figure.) (a) Find the value of R such that the current supplied by the battery is 0.0750 A. (b) Find the value of R that gives a potential difference of 2.65 V across resistor 2. The circuit for this problem has three resistor connected to a battery. The lower two resistor are in series with one another, and in parallel with the upper resistor. The battery has an emf of 12.0 V.
Referring to Example 21-13 Suppose R 1 = R 2 = 225 Ω and R 3 = R . The emf of the battery is 12.0 V. (The resistor numbers are given in the Interactive Figure.) (a) Find the value of R such that the current supplied by the battery is 0.0750 A. (b) Find the value of R that gives a potential difference of 2.65 V across resistor 2. The circuit for this problem has three resistor connected to a battery. The lower two resistor are in series with one another, and in parallel with the upper resistor. The battery has an emf of 12.0 V.
Referring to Example 21-13 Suppose R1 = R2 = 225 Ω and R3 = R. The emf of the battery is 12.0 V. (The resistor numbers are given in the Interactive Figure.) (a) Find the value of R such that the current supplied by the battery is 0.0750 A. (b) Find the value of R that gives a potential difference of 2.65 V across resistor 2.
The circuit for this problem has three resistor connected to a battery. The lower two resistor are in series with one another, and in parallel with the upper resistor. The battery has an emf of 12.0 V.
Problem 9:
A capacitor is charged with a total charge of q = 5.1E-05 C. The capacitor is wired in series with a resistor, R-8
Randomized Variables
q = 5.1 E-05 C
← Δ Part (a) Input an expression for the time constant, τ, of this circuit using the variables
provided and C for capacitance.
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Part (b) What is the value of the time constant in s if the capacitor has capacitance of
1.0 μF?
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Part (c) How long will it take the capacitor to discharge half of its charge in seconds?
Item 15
Now we will consider some slightly different related scenarios to Example 21-18.
Part A
Example 21-18 depicts the following scenario. A circuit consists of a resistor R₁ = 126-, a resistor R₂ = 275-, a capacitor C = 182-μF, a switch, and an € = 3.00-V battery all connected in series. Initially the capacitor is uncharged and the switch is open. At
time t=0 the switch is closed.
increase
decrease
stay the same
3.00 V
Suppose the resistance of the 126-2 resistor is reduced by a factor of 2. Assume everything else in the problem remains the same. Does the final value of the charge on the capacitor increase, decrease, or stay the same?
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126 Ω
182 μF
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275 Ω
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Chapter 21 Solutions
Modified Mastering Physics with Pearson eText -- Access Card -- for Physics (18-Weeks)
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How To Solve Any Resistors In Series and Parallel Combination Circuit Problems in Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=eFlJy0cPbsY;License: Standard YouTube License, CC-BY