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Standard X

Physics

Work

There is an e...

Question

There is an electric field in +X-direction. If the work done on moving a charge of 0.2C through a distance of 2 m along a line making an angle of 60 $^{\circ}$ with +X-axis is 4J. The value of E is

\sqrt{3} N C^{- 1}

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4 N C^{- 1}

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5 N C^{- 1}

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20 N C^{- 1}

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Solution

The correct option is D $20 N C^{- 1}$
Charge $q = 0.2 c$
Distance $d = 2 m$
Angle $q = 60^{o}$
Work done $= 4$

Work done in moving charge.
$f_{2} = \frac{w}{q d cos θ}$
$\frac{4}{0.2 \times 2 \times c a 60}$ $= \frac{4}{0.4 \times 0.5}$
$= 20 N / C$

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There is an electric field in +X-direction. If the work done on moving a charge of 0.2C through a distance of 2 m along a line making an angle of 60∘ with +X-axis is 4J. The value of E is

The correct option is D 20NC−1Charge q=0.2 cDistance d=2 mAngle q=60oWork done=4Work done in moving charge.f2=wqdcosθ40.2×2×ca 60 =40.4×0.5=20 N/C

There is an electric field in +X-direction. If the work done on moving a charge of 0.2C through a distance of 2 m along a line making an angle of 60 $^{\circ}$ with +X-axis is 4J. The value of E is

The correct option is D $20 N C^{- 1}$
Charge $q = 0.2 c$
Distance $d = 2 m$
Angle $q = 60^{o}$
Work done $= 4$

Work done in moving charge.
$f_{2} = \frac{w}{q d cos θ}$
$\frac{4}{0.2 \times 2 \times c a 60}$ $= \frac{4}{0.4 \times 0.5}$
$= 20 N / C$