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

Answer 1

`("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")`