A level physics question help please urgent electricity

sorry I have a test on this tomorrow- I don't understand what causes the heating effect in a wire. Is it the current or the power? If I was asked why does the temperature increase, am I supposed to relate it to the current as there's a higher current or something, or a higher power?
Thanks so much x

I believe heating is caused by resistance. This happens when electrons collide with the atoms of the wire (releasing heat energy).

I would relate to current rather than power, as an increase in current in a non-Ohmic component increases resistance and therefore increases heat given out. I'm not sure what the relationship between resistance and power is in a non-Ohmic component.

sorry I have a test on this tomorrow- I don't understand what causes the heating effect in a wire. Is it the current or the power? If I was asked why does the temperature increase, am I supposed to relate it to the current as there's a higher current or something, or a higher power?
Thanks so much x

sorry I have a test on this tomorrow- I don't understand what causes the heating effect in a wire. Is it the current or the power? If I was asked why does the temperature increase, am I supposed to relate it to the current as there's a higher current or something, or a higher power?
Thanks so much x

I believe heating is caused by resistance. This happens when electrons collide with the atoms of the wire (releasing heat energy).

I would relate to current rather than power, as an increase in current in a non-Ohmic component increases resistance and therefore increases heat given out. I'm not sure what the relationship between resistance and power is in a non-Ohmic component.

I don't understand what causes the heating effect in a wire
Electrons are charge carriers for current, they move (opposite to current, remember, that's the flow of positive charge, odd I know but that's the convention, it makes sense in some places) through the wire. The wire itself is a lattice of atoms, and it's rare, but electrons may "collide" with these lattice atoms. "Collide" because they're just deflected, but we're judging a collision as a very close deflection, one which transfers a notable amount of the electrons kinetic energy to the nucleus. The more current, the more electrons, the more collisions, the more the atoms get this KE. And we know that lattice vibration <-> temperature of the material.
tl;dr electrons collide, transfer KE, material heats up.

or a higher power
Power dissipated in the wire is given by $i^2R$ where $i$ is the current. You can say that an increase in current will give rise to more power dissipation across the wire. Alternatively if you give the above wordy argument, you won't need to resort to using equations.

You have a test on Good Friday? Schools have broken up ....

thank you soo much, you're amazing at explaining things

oh **** I thought I had school tomorrow lol, we were supposed to have a physics test next lesson
well, I guess I'm not revising physics anymore lmao 😭

Thanks x3

although tbf it has me on edge these days, 2-3 years ago people were a lot more diligent in how they asked questions or the effort they'd put into solving them, that's just my personal biased opinion though

Not you though obviously, just in general XD