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