College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 18, Problem 19P

Figure P18.19 shows a Wheatstone bridge, a circuit used to precisely measure an unknown resistance R by varying Rvar until the ammeter reads zero current and the bridge is said to be “balanced.” If the bridge is balanced with Rvar = 9.00 Ω, find (a) the value of the unknown resistance Rand (b) the current in the 1.00 Ω resistor. (Hint: With the bridge balanced, the wire through the ammeter can effectively be removed from the circuit, leaving two pairs of resistors in parallel.)

Chapter 18, Problem 19P, Figure P18.19 shows a Wheatstone bridge, a circuit used to precisely measure an unknown resistance R

Figure Pl8.19

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Chapter 18 Solutions

College Physics

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