TBR physics Section 9 circuts 9.4b

[Steelersfan2009]

Ok someone explain this to me. (I hate how the physics part of the TBR books have questions with no explanations!!! fix this!!)

Which equation represents the rate at which a liquid of mass m, with specific heat c, is heated by a conduting coil of current I and voltage V?

∆T/∆t = mc/IV
I know to use the limiting cases method cause I’m not good at manipulating units. So how would you approach this problem?
Thanks so much everyone!

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[dragon529]

I think manipulating equations is easier for this problem.. Just need Q=mc(deltaT) and P=IVt