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Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
Question
The potential difference between two points is 20 volts. How much work will be required to move $4 \times 10^{-4}$ coulombs charge from one point to another?
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Answer

Work $(W)=$ Charge $(q)$ $\times$ potential difference (V)
$=4 \times 10^{-4} \times 20=8 \times 10^{-3}$ joules

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