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Question
Which of the following represents voltage?
Options
`("Work done")/("Current" xx "Time")`
Work done × Charge
`("Work done" xx "Time")/"Current"`
Work done × Charge × Time
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Solution
`("Work done")/("Current" xx "Time")`
Explanation -
Potential difference (V) is defined as the ratio of work done (W) and charge (Q).
`"V" = "W"/"Q"`
Q = i × t
Charge is defined as
Q = i × t
where i = current
t = time
So,
`"V" = "W"/("i" xx "t")`
`"Voltage" = ("Work done")/("Current" xx "Time")`
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