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Factors Affecting Resistance & How They Affect

Assume that a...

Question

Assume that an electric field $¯ E = 30 x^{2} ˆ i$ exists in space. Then the potential difference $V_{A} - V_{O}$ , where $V_{O}$ is the potential at the origin and $V_{A}$ the potential at $x = 2$ m is :

- 80 V

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80 V

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120 V

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- 120 V

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Solution

The correct option is A $- 80 V$
Answer is $A$
$¯ E = 30 x^{2} ˆ i$
$d V = - \int E . d x$
$\int_{V_{0}}^{V_{A}} d V = - \int_{0}^{2} 30 x^{2} d x$
$V_{A} - V_{0} = - 80 V o l t$

Suggest Corrections

Similar questions

\to E = 30 x^{2} i

V_{A} - V_{0}

V_{0}

V_{A}

\to E = 30 x^{2}^i

V_{A} - V_{0}

V_{0}

V_{A}

x = 2 m

120 V

80 V

x = - 1 c m

x = + 1 c m

\to E = 2 \to i + 3 \to j + 0 \to k

(V_{A} - V_{B})

A (2, 2, 0)

B (1, 1, 0)

\to E = (20 x^{3}^i) N C^{- 1}

\to E = (20 x^{3}^i) N C^{- 1}

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