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Least Integer Function

What is the s...

Question

What is the smallest absolute value of $E_{x}$ ?

5 V / m

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\frac{10}{3} V / m

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0 V / m

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25 V / m

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Solution

The correct option is C $0 V / m$
Since $E_{x} = \frac{- δ V}{δ x}$ , The smallest absolute value of $E_{x}$ corresponds to the interval in which $V$ changes the least. From the graph, we see that this occurs in the interval $c d$ where, $| E_{x} | = ∣ ∣ ∣ \frac{5 - 5}{2 - 1} ∣ ∣ ∣ \frac{V}{m}$
$E_{x} = 0 V / m$

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