What is the current read by the ammeter in the circuit below? Let: R1 = 1 kiloohm. R2 = 2 kiloohm. R3 = 3 kiloohm, and the emf of the ideal source is 5 volts. Input R1, R2. and R3 for resistors R1. R2. and R3 respectively. Inpu: E for the emf E. Use context clues to figure out if you need to input a numericol value, varioble, word, etc. All numerical answers should be in three significont figures. R1 R2 R3 (A

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter24: Magnetic Fields
Section: Chapter Questions
Problem 75A
icon
Related questions
Question
What is the current read by the ammeter in the circuit below? Let R1 = 1 kiloohm, R2 = 2 kiloohm, R3 = 3 kiloohm, and the emf of the ideal source is 5 volts.
Input R1, R2, and R3 for resistors R1. R2. and R3 respectively. Input E for the emf E. Use context clues to figure out if you need to input a numerical value, varioble, word, etc. All numerical answers
should be in three significant figures.
R1
R2
R3
(A)
First we calculate the current across each resistor. From Ohm's law, we arrive at a general formula for current:
1= v
R
Plugging in values, the current across the resistor R1 is equal to: (Please note that the current is in milliamperes)
1 = eeec0os
Similarly the current across R2 is:
mA
Transcribed Image Text:What is the current read by the ammeter in the circuit below? Let R1 = 1 kiloohm, R2 = 2 kiloohm, R3 = 3 kiloohm, and the emf of the ideal source is 5 volts. Input R1, R2, and R3 for resistors R1. R2. and R3 respectively. Input E for the emf E. Use context clues to figure out if you need to input a numerical value, varioble, word, etc. All numerical answers should be in three significant figures. R1 R2 R3 (A) First we calculate the current across each resistor. From Ohm's law, we arrive at a general formula for current: 1= v R Plugging in values, the current across the resistor R1 is equal to: (Please note that the current is in milliamperes) 1 = eeec0os Similarly the current across R2 is: mA
And the current across R3 is:
The current read by the ammeter is the sum of the currents across each resistor:
1=1+12+l3
mA
Alternatively, we can solve for the current across the ammeter by first calculating the equivalent resistance and then applying Ohm's law.
The equivalent resistance of the three resistors in parallel is:
1/Reg =1/R, +1/R2 +1/
Thus.
Reg
Transcribed Image Text:And the current across R3 is: The current read by the ammeter is the sum of the currents across each resistor: 1=1+12+l3 mA Alternatively, we can solve for the current across the ammeter by first calculating the equivalent resistance and then applying Ohm's law. The equivalent resistance of the three resistors in parallel is: 1/Reg =1/R, +1/R2 +1/ Thus. Reg
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

Blurred answer
Knowledge Booster
Circuits
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Glencoe Physics: Principles and Problems, Student…
Glencoe Physics: Principles and Problems, Student…
Physics
ISBN:
9780078807213
Author:
Paul W. Zitzewitz
Publisher:
Glencoe/McGraw-Hill
University Physics Volume 2
University Physics Volume 2
Physics
ISBN:
9781938168161
Author:
OpenStax
Publisher:
OpenStax