#3. Please show work # Basic Electricity## Key Concepts:- **Electric charges and fields**- **Coulomb’s Law:** \[ F = k \frac{q_1 q_2}{r^2} \]- **Simple DC circuits: Series, Parallel, and Compound**- **Ohm’s Law:** \[ V = IR \]- **Electrical Measurement**## Reinforcement:1. **Problem 1: Charge Calculation** - Find the value of charge of identical particles if the measured force of \( F = 0.300 \, \text{N} \) and the distance between them is 210 cm.2. **Problem 2: Electric Field Magnitude** - An electric field is measured to exert a force of \( 2.21 \times 10^{-4} \, \text{N} \) on a particle with a charge of \( 4.55 \times 10^{-4} \, \text{C} \). What is the magnitude of that electric field?3. **Problem 3: Resistivity Calculation** - If a current drawn by a circuit with a resistance of \( 4.3 \, \text{k}\Omega \) doubles when you halve the cross-sectional area \( A = 0.2 \, \text{cm}^2 \) of a wire while keeping the length constant at 3.1 cm, what would the resistivity be?No graphs or diagrams are present in this document.

Answered: Image /qna-images/answer/2a7b8262-b284-43bf-ac08-c114cc976472.jpg

3. If a current drawn by a circuit with a resistance of 4.3 kN doubles when you halve the cross-sectional area A = 0.2cm2 of a wire while keeping the length constant at 3.1 cm, what would the resistivity be?

3. If a current drawn by a circuit with a resistance of 4.3 kN doubles when you halve the cross-sectional area A = 0.2cm2 of a wire while keeping the length constant at 3.1 cm, what would the resistivity be?

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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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

#3. Please show work

# Basic Electricity

## Key Concepts:
- **Electric charges and fields**
- **Coulomb’s Law:**
\[
F = k \frac{q_1 q_2}{r^2}
\]
- **Simple DC circuits: Series, Parallel, and Compound**
- **Ohm’s Law:**
\[
V = IR
\]
- **Electrical Measurement**

## Reinforcement:

1. **Problem 1: Charge Calculation**
- Find the value of charge of identical particles if the measured force of \( F = 0.300 \, \text{N} \) and the distance between them is 210 cm.

2. **Problem 2: Electric Field Magnitude**
- An electric field is measured to exert a force of \( 2.21 \times 10^{-4} \, \text{N} \) on a particle with a charge of \( 4.55 \times 10^{-4} \, \text{C} \). What is the magnitude of that electric field?

3. **Problem 3: Resistivity Calculation**
- If a current drawn by a circuit with a resistance of \( 4.3 \, \text{k}\Omega \) doubles when you halve the cross-sectional area \( A = 0.2 \, \text{cm}^2 \) of a wire while keeping the length constant at 3.1 cm, what would the resistivity be?

No graphs or diagrams are present in this document.

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