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Physics, Chemistry and Biology: Post your doubts here!

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Please help!
How much energy is converted in a resistor of 5 ohms carrying a current of 2 A for 10 s
A : 4j
b : 25j
c : 100j
d : 200j
the answer is D i think..coz
P=IV..so uv 2 find d voltage first...u do..V=RxI=2x5=10V

P=2X10=20W..so..E=PxT..so...2oWx10s=200j
 
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yes ..u shud kno all kind ov logic gates:AND,OR,NOR,NOT.NAND!dts all-kno 2 drw dm coz dy smtime ask u 2 drw...n kno when in each gate the outputs will b high or low its very important..dont neglect it..go 2ru d rev.guide if u wnt..:)
Thank you very much.. Good luck for ur exams =)
 
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