thanks, my mistake so for example in this random pic i got off the interwebs the voltage across both resistors would be the same?
Yes it would be. Just a tip for questions involving lightbulbs, a fairly common question is where they have 2 bulbs and one is brighter in series and the other is brighter when in parallel, and they ask you to explain why/which has the higher resistance. Remember that the brightness is essentially a measure of the power dissipated, and you hopefully know that p=v^2/r or P=I^2 R. In series, I is constant so using the second we can easily see that the bulb with the higher resistance is brighter. In parallel, the voltage is the same so we can see that the one with the higher resistance will be less bright from the first equation
Yes it would be. Just a tip for questions involving lightbulbs, a fairly common question is where they have 2 bulbs and one is brighter in series and the other is brighter when in parallel, and they ask you to explain why/which has the higher resistance. Remember that the brightness is essentially a measure of the power dissipated, and you hopefully know that p=v^2/r or P=I^2 R. In series, I is constant so using the second we can easily see that the bulb with the higher resistance is brighter. In parallel, the voltage is the same so we can see that the one with the higher resistance will be less bright from the first equation