Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 6.3, Problem 2aT
Suppose an uncharged capacitor is connected in series with a battery and bulb as shown.
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1. Predict the behavior of the bulb when the switch is closed. Explain.
Set up the circuit and check your prediction. If your prediction is in conflict with your observation, how can you account for your observation?
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2. Without using a voltmeter, determine the potential difference across the capacitor at the following times:
• just after the switch is closed. Explain how you can tell. (Hint: Compare the brightness of the bulb to the brightness of a bulb connected to a battery in a single-bulb circuit without a capacitor.)
• a long time after the switch is closed. Explain how you can tell.
Use a voltmeter to check your predictions. (Hint: Be sure to discharge the capacitor completely after each observation.)
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(Figure 1)In the figure are shown three capacitors with
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Ci = 6.00 µF, C2 = 3.00 µF, C3 = 5.00 µF. The
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Figure
< 1 of 1
What is the charge on capacitor C3 ?
Express your answer in microcoulombs to three significant figures.
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a
C2
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b
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The capacitor in the figure (Figure 1)begins to charge after the switch closes at t =0 s.
What is AV c a very long time after the switch has closed?
O 2. E
O 0
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• Part B
6
What is Qmar in terms of E. R and C?
να ΑΣφ
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Part C
In this circuit, does I=+dQ/dt or -dQ/dt?
O I= +dQ/dt
O I=-dQ/dt
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Part D
Figure
< 1 of 1
Find an expression for the current I at time t.
Express your answer in terms of some or all of the variables E, R, C, and t.
Closes at /= (0 s
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During an action potential, Na+ ions move into the
2
cell at a rate of about 3 × 10¯7mol/m² . • S.
Part A
How much power must be produced by the "active Na+ pumping" system to produce this flow
against a +30-mV potential difference? Assume that the axon is 80 cm long and 30 μm in
diameter.
Express your answer using two significant figures.
Chapter 6 Solutions
Tutorials in Introductory Physics
Ch. 6.1 - Obtain a battery, a light bulb, and a single piece...Ch. 6.1 - A student has briefly connected a wire across the...Ch. 6.1 - Light a bulb using a battery and a single wire....Ch. 6.1 - Carefully examine a bulb. Two wires extend from...Ch. 6.1 - Compare the brightness of the two bulb with each...Ch. 6.1 - Compare the brightness of each of the bulbs in the...Ch. 6.1 - We may think of a bulb as percentage an obstacle,...Ch. 6.1 - Compare the brightness of the bulbs in this...Ch. 6.1 - Is the brightness of each bulb in the two-bulb...Ch. 6.1 - Formulate a rule for predicting how the current...
Ch. 6.1 - Does the amount of current through a battery seem...Ch. 6.1 - Unscrew one of the bulbs in the two-bulb parallel...Ch. 6.1 - The circuit at tight contains three identical...Ch. 6.1 - Show that a simple application of the model for...Ch. 6.2 - The circuits at right contain identical batteries,...Ch. 6.2 - The circuits at right contain identical batteries...Ch. 6.2 - Predict the relative brightness of bulbs...Ch. 6.2 - Set up the circuit with a single bulb and the...Ch. 6.2 - Set up the circuit containing two bulbs in series...Ch. 6.2 - Predict what the voltmeter would read if it were...Ch. 6.2 - Set up the circuit with two bulbs in parallel as...Ch. 6.2 - Answer the following questions based on the...Ch. 6.2 - Set up the circuit with three bulbs as shown and...Ch. 6.2 - Before setting up the circuit shown at right:...Ch. 6.2 - Both circuits al right have more than one path for...Ch. 6.3 - A capacitor is connected to a battery, bulb, and...Ch. 6.3 - Remove the capacitor and the bulb from the...Ch. 6.3 - Suppose an uncharged capacitor is connected in...Ch. 6.3 - Suppose that instead of connecting the uncharged...Ch. 6.3 - Suppose that the bulbs were connected in parallel...Ch. 6.3 - After completing the experiments above, two...Ch. 6.3 - Suppose that a different capacitor of smaller...Ch. 6.3 - Before connecting the circuit a student makes the...Ch. 6.3 - Make the following prediction on the basis of your...
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