We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
You start from the basics like the strutural differences between the plant and animal cell and diffusion and osmosis etc. These things are in the beginning chapters of all books. I suggest that you should use that green coloured biology book for GCSE, it's an excellent book.
OK
For torch lamp,I=0.25 , R=12 ohm (from the question)
For desk lamp, I=0.25 , R=960 ohm (from b )
As mentioned in the question they are now connected in series (both desk & torch lamp), so their total resistance would be :
formula=I1+I2 ,,,,, 690+12=972 ohm so this is the resistance for the circuit.
The voltage of the circuit is 240v as given in the question. So we will find the current.
formula I=V/R, =240/972=0.247A.
Now you just need to compare the current of the whole circuit with the current of each of the lamps.
0.25 > 0.247. So the filament will not melt ... Student Y is correct.
My bad, I should have mentioned it before. It's DG Mackean anyways.
I have
Yea, i found it ok, harder than i thought it was, what did you write for why the crabs have alot of babies and still have a stable population?
which chapter are you talking about?
umm that's a bit difficult. You just tell me the question in which you are facing difficulty.
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now