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The potential gradient along the length ...

The potential gradient along the length of uniform wire is `10" Vm"^(-1)`. The length of the wire is 1 m. What is the potential difference across two points on the wire separated by 25 cm?

A

`2.5" V"`

B

`5.0" V"`

C

`7.5" V"`

D

`10" V"`

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