when should we use the formula:
V=IR
P=I²R
P=V²/R
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hey look,
these formulas are one and the same.
they are used to calculate different values in the current section of physics.
when you are given current ( I) or potential difference ( V),
and are asked to find the respective I or V,
and are given the power as p
use these formulas to first find the resistance, and then substitute the values for the given qn.
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