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Giancoli's Physics: Principles with Applications, 7th Edition

DC Circuits

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19-1: Emf and Terminal Voltage

2:00

1:53

1:34

19-2: Resistors in Series and Parallel

19-3: Kirchhoff's Rules

19-4: Emfs Combined, Battery Charging

4:17

1:40

19-5: Capacitors in Series and Parallel

19-6: RC Circuits

19-8: Ammeters and Voltmeters

Problem 52

Estimate the value of resistances needed to make a variable timer for intermittent windshield wipers: one wipe every 15 s, 8 s, 4 s, 2 s, 1 s. Assume the capacitor used is on the order of $1 \; \mu \textrm{F}$ . See Fig. 19–67.

Figure 19-67.

R_{15} = 15 \times 10^6 \; \Omega, R_{8} = 8 \times 10^6 \; \Omega, R_4 = 4 \times 10^6 \; \Omega

R_2 = 2\times 10^6 \; \Omega, R_1 = 1\times 10^6 \; \Omega

Giancoli 7th Edition, Chapter 19, Problem 52 solution video poster

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Estimate the value of resistances needed to make a variable timer for intermittent windshield wipers: one wipe every 15 s, 8 s, 4 s, 2 s, 1 s. Assume the capacitor used is on the order of 1 μF1 \; \mu \textrm{F}1μF. See Fig. 19–67.

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Estimate the value of resistances needed to make a variable timer for intermittent windshield wipers: one wipe every 15 s, 8 s, 4 s, 2 s, 1 s. Assume the capacitor used is on the order of $1 \; \mu \textrm{F}$ . See Fig. 19–67.