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# Current Electricity: Calculate Potential Difference

APPH12-9Y4ZTV

A certain conductor has a resistance of $200 \ \Omega$.

What potential difference is required across the conductor in order to cause a current of $0.5\text{ A}$ to flow through it?

A

$50\text{ V}$

B

$100\text{ V}$

C

$200\text{ V}$

D

$400\text{ V}$