Qualification > Sciences
IGCSE PHYSICS
wassup:
--- Quote from: @d!_†oX!© on November 08, 2009, 02:13:37 pm ---it'd be gr8 if u cud post the questionshere plss....
--- End quote ---
u can see d q's here:
mj02 http://www.freeexampapers.us/IGCSE/Physics/CIE/2002%20Jun/0625_s02_qp_3.pdf
mj03 http://www.freeexampapers.us/IGCSE/Physics/CIE/2003%20Jun/0625_s03_qp_3.pdf
nid404:
--- Quote from: astarmathsandphysics on November 08, 2009, 02:18:51 pm ---I just spotted I passed 6000 posts.
--- End quote ---
congrats ;D
~~~~shreyapril~~~~:
9)ai) power=VI=24*2=48W!!
ii) power1=power2 so 48=0.4x!!
solve for x x=120 volts!!
b)i) the transformer being 100% efficient means that power in primary is eaul to power in secondary!! it converts all the elcerticity withouht ne or less wastage!!
ms:no/very little energy/power lost or energy/power in =
energy/power out
ii)ms:any mention of magnetic field
changing magnetic field
field passes through core or secondary coil
induces voltage in secondary coil
number of turns on secondary determines voltage
output
~~~~shreyapril~~~~:
--- Quote from: wassup on November 08, 2009, 02:12:43 pm ---mj02 q9a
--- End quote ---
connect the 1 volt supply to Y's of CRO then measure the readings!!
the maximum value is 1!!
acc. mark the sacle!!
wassup:
--- Quote from: ~~~~shreycool~~~~ on November 08, 2009, 02:22:36 pm ---9)ai) power=VI=24*2=48W!!
ii) power1=power2 so 48=0.4x!!
solve for x x=120 volts!!
b)i) the transformer being 100% efficient means that power in primary is eaul to power in secondary!! it converts all the elcerticity withouht ne or less wastage!!
ms:no/very little energy/power lost or energy/power in =
energy/power out
ii)ms:any mention of magnetic field
changing magnetic field
field passes through core or secondary coil
induces voltage in secondary coil
number of turns on secondary determines voltage
output
--- End quote ---
sorry fr this but i wnted 2 know d ans fr 6th question of mj03.
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