If resistance is halved, the current is doubled. Show.

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Solution

According to ohm's law Current (I) = Potential difference (V) / Resistance(R)
If the potential difference is maintained constant and the resistance is changed,
Current (I) is inversely proportinal to the reisistance (R)
⇒ I ∝ 1/R
So, If the resistance is doubled by applying the constant potential difference the current becomes the half of the previous.

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