Join TSR now and get all your revision questions answeredSign up now
    • Thread Starter
    Offline

    0
    ReputationRep:
    Recently been off school for two weeks (been ill). So fallen behind with work. So, still very confused with this set work despite reading over textbook. Desperately need help with these questions, any help; explanation/shown method is appreciated. (All questions, just don't seem to be making sense). - see attachment.




    This was posted from The Student Room's iPhone/iPad App
    Attached Images
     
    Offline

    19
    ReputationRep:
    A & B. What does the book say about the relation between power, current and voltage. For B you will have to assume s1 is closed and s2 is open, can you see why?
    C. Requires you to calculate the power input from light from the given data.
    D. Requires you understand the effect of s1 and s2 which you thought about in B.
    • Thread Starter
    Offline

    0
    ReputationRep:
    Thanks, much appreciated.


    This was posted from The Student Room's iPhone/iPad App
 
 
 
Poll
Should MenACWY vaccination be compulsory at uni?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.