Total Charge Calculation for a Rectangular Plate

PhysicsElectrostaticsEasySTEM

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A rectangular charged plate with a dimension of $a = 1,73m$ and $a = 0,71m$ has a charge density of $\sigma = 90\mu C/m^2$. What is the total charge of the plate in units of $\mu C$ using one decimal point.

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1
Step 1

In this problem, we need to find the total charge of a rectangular plate given its dimensions and surface charge density.

Electrostatics: Total Charge on a Plate

2
Step 2

Let's list our known values. The plate has dimensions a equals one point seventy three meters and b equals zero point seventy one meters. The surface charge density sigma is ninety micro-Coulombs per square meter.

$$ \begin{cases} a = 1.73 \, \text{m} \\ b = 0.71 \, \text{m} \\ \sigma = 90 \, \mu\text{C/m}^2 \end{cases}$$
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Step 3

The total charge Q is calculated by multiplying the surface charge density sigma by the area of the plate A.

$$Q = \sigma \times A$$
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Step 4

For a rectangular plate, the area A is simply the product of its length and width.

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Step 5

Let's first calculate the area A.

Step 1: Calculate Area

$$A = a \times b$$
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Step 6

Substituting the values, we have one point seventy three meters times zero point seventy one meters.

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About This Question

Subject
Physics
Topic
Electrostatics
Difficulty
Easy
Exam
STEM
Question Type
Open Ended

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