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How are you meant to find out the total resistance if you don't have a voltmeter reading and how are you meant to find out the volt meter reading if you don't have a total resistance? ​

How Are You Meant To Find Out The Total Resistance If You Dont Have A Voltmeter Reading And How Are You Meant To Find Out The Volt Meter Reading If You Dont Hav class=

Answer :

Solve for resistance using power and current.

Substitute IR for V in the first formula: P = (IR)I = I2R. Rearrange to solve for resistance: R = P / I2. In a series circuit, the current across one component is the same as the total current. This is not true for a parallel circuit