# Isaac Physics C4a

I’ve been struggling to find the power in C4a.2. I’ve managed to find the total resistance and the pd by splitting the resistance in a way like a ratio, but still stuck on finding power. Any help would be appreciated. I also know the equation is power = voltage^2/resistance
(edited 7 months ago)
Original post by depriveofsocial
I’ve been struggling to find the power in C4a.2. I’ve managed to find the total resistance and the pd by splitting the resistance in a way like a ratio, but still stuck on finding power. Any help would be appreciated. I also know the equation is power = voltage^2/resistance

As you mentioned that you have found the p.d. for part B and I believe you know that p.d. across parallel circuits is the same, so you have p.d. and resistance, the power is ...
Original post by Eimmanuel
As you mentioned that you have found the p.d. for part B and I believe you know that p.d. across parallel circuits is the same, so you have p.d. and resistance, the power is ...