College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
What If? For what value of (in volts) will the current in the ammeter read 1.59 A?

Transcribed Image Text:The ammeter shown in the figure below reads 2.10 A. Find the following.
**Circuit Diagram:**
- The circuit includes a 15.0 V battery and an unknown emf (labeled \( \mathcal{E} \)).
- There are three resistors:
- 7.00 Ω connected in series with the ammeter.
- 5.00 Ω in parallel with the ammeter.
- 2.00 Ω connected in series with the unknown emf \( \mathcal{E} \).
- Current \( I_1 \) flows through the 7.00 Ω resistor, and current \( I_2 \) flows through the 2.00 Ω resistor.
**Objectives and Results:**
(a) **Current \( I_1 \) (in A):**
- Calculated value: 0.64 A
(b) **Current \( I_2 \) (in A):**
- Calculated value: 1.47 A
(c) **emf \( \mathcal{E} \) (in volts):**
- Calculated value: 13.42 V
(d) **What If?** For what value of \( \mathcal{E} \) (in volts) will the current in the ammeter read 1.59 A?
- Attempted value: 5.5 V (This value did not provide the desired result, as indicated by the red cross.)
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