COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 21, Problem 2QAP
To determine
Does ohms law equation (V=IR) apply to alternating currents?
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Chapter 21 Solutions
COLLEGE PHYSICS
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- When working with high-power electric circuits, it is advised that whenever possible, you work "one-handed” or “keep one hand in your pocket." Why is this a sensible suggestion?arrow_forwardVerify that alter a time of 10.0 ms, the current for the situation considered in Example 23.9 will be 0.183 A as stated.arrow_forwardCheck Your Understanding When using Kirchhoff’s laws, you need to decide which loops to use and the direction of current flow through each loop. In analyzing the circuit in Example 10.7, the direction of current flow was chosen to be clockwise, from point a to point b. How would the results change if the direction of the current was chosen to be counterclockwise, from point b to point a?arrow_forward
- €22. Verify, as was concluded without proof in Example 23.7, that units ofarrow_forwardThe switch is closed in Figure 18.20. After a long time compared with the time constant, of the circuit, what will the current be in the 2- resistor? (a) 4 A (b) 3 A (c) 2 A (d) 1 A (c) More information is needed. Figure 18.20 (Quick Quiz 18.9)arrow_forwardFor the circuit shown below, =20V , L = 4.0 mH, and R = 5.0 . After steady state is reached with S1 closed and S2 open, S2 is closed and immediately thereafter (at t = 0) S1 is opened. Determine (a) the current through L at t = 0, (b) the current through L at r = 4.0 x 10-4 s, and (c) the voltages across L and R at t = 4.0 x 10-4 s.arrow_forward
- When the switch shown in Fig. 19–45 is closed, what willhappen to the voltage across resistor R1 It will(a) increase. (b) decrease. (c) stay the samearrow_forwardWhich one of the following combinations of units is equivalent to the ohm? A. V/C B. A/J C. J/s D. J×s/C2 E. W/Aarrow_forwardIf a current of one- or two-tenths of an ampere were to flow into one of your hands and out the other, you would probably be electrocuted. But if the same current were to flow into your hand and out the elbow above the same hand, you would survive even though the current might be large enough to burn your flesh. Explain.arrow_forward
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