The resistance of a circuit doubled and the applied voltage is doubled. What will happen to the circuit current?
by 
firemant
ANSWERS: 3
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Apply Ohm's Law: V = I x R
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Just do some simple math V = I x R, so I = V / R Hint: - if you multiply the top and bottom of a fraction by the same number, the value of the fraction doesnt change. - Doubling a number is the same as multiplying it by 2.
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It would remin the same accourding to Ohm's law. V=IR so I=V/R when the values of V and R are both doubled,they get cancelled out.Only doubling voltage would make current get doubled and only doubling the resistance would reduce it to half of it's original value.
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