gcse aqa physics

In an ohmic conductor, the temp is constant so the p.d and current are directly proportional ( when one increases the other increases) so the resistance is constant ( because the electrons don’t have a change in kinetic energy for more/ less collisions with the ions in the wire), but in for example a bulb when the current increases the temp increases so the resistance increases because the electrons in the wire have more kinetic energy ( from temp) and collide more often with the ions in the wire.

okay thank you so so much! also, sorry to be annoying, but i just have another question. if you add a voltmeter to a series circuit does it become a parallel circuit and the whole circuit follows the rules for a parallel circuit? and in a parallel circuit, if components are connected in series in a branch does the p.d split?
thank you

okay thank you so so much! also, sorry to be annoying, but i just have another question. if you add a voltmeter to a series circuit does it become a parallel circuit and the whole circuit follows the rules for a parallel circuit? and in a parallel circuit, if components are connected in series in a branch does the p.d split?
thank you

the whole circuit does not become a parallel circuit as the voltmeter is only used to read the voltage of a component in a circuit, the circuit will still follow the rules of a series circuit.