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Get Full Access to Physics - 4 Edition - Chapter 21 - Problem 37
Get Full Access to Physics - 4 Edition - Chapter 21 - Problem 37

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# Predict/Explain Two resistors are connected in parallel.

ISBN: 9780321611116 152

## Solution for problem 37 Chapter 21

Physics | 4th Edition

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Problem 37

Predict/Explain Two resistors are connected in parallel. (a) If a third resistor is now connected in parallel with the original two, does the equivalent resistance of the circuit increase, decrease, or remain the same? (b) Choose the best explanation from among the following: I. Adding a resistor generally tends to increase the resistance, but putting it in parallel tends to decrease the resistance; therefore the effects offset and the resistance stays the same. II. Adding more resistance to the circuit will increase the equivalent resistance. III. The third resistor gives yet another path for current to ow in the circuit, which means that the equivalent resistance is less.

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Lectures 6 a nd 7 Relative Motion Motion from other p erspectives Uniform Circular Motion ­ Speed is fixed ­ Velocity and acceleration n ot 0 ­ Directionally changing velocity ­ Acceleration called “radial or centripetal” acceleration EQUATION a = v 2 c r Time it takes to complete one revolution is one “period”, T (in seconds) EQUATION v = 2πr = 1 circumference T 1 period Rotational (Angular) Rotation θis ositive g oing counterclockwise f rom p ositive x­axis (x,y) or (r, θ s coordinates arc length

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