The Student Room Group

Electricity- potential difference


why is the answer 'B'?
Reply 1
it's from the paper o level physics of May/June 2015
It's a parallel circuit. In parallel, the P.D. is the same so you can use the first resistor to find that:
PD = I X R = 30 X 0.6 = 18V so it's B
Reply 3
thanks

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