dave connects an electric circuit to find the resistance of 100 cm of wire. the battery voltage is 9V. the ammeter is 2A. and the voltmeter is 5V. what is the resistance of the 100cm of wire
dave connects an electric circuit to find the resistance of 100 cm of wire. the battery voltage is 9V. the ammeter is 2A. and the voltmeter is 5V. what is the resistance of the 100cm of wire
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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dave connects an electric circuit to find the resistance of 100 cm of wire. the battery voltage is 9V. the ammeter is 2A. and the voltmeter is 5V. what is the resistance of the 100cm of wire

Transcribed Image Text:20
12 Dave connects an electric circuit to find the resistance of 100cm of wire.
Look at the diagram below.
9V
100 cm of wire
The battery voltage is 9V.
The reading on the ammeter is 2A.
The reading on the voltmeter is 5V.
(a) Calculate the resistance of the 100 cm of wire.
(b) Dave now uses some thinner wire.
A 100 cm length of this wire has a resistance of 5 ohms.
What length of this wire is needed to mako a 2 ohm resistor?
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