If R1 and R2 are the resistance of statements of a 400W and 200W lamp design to operate at same voltage, then
(A) R1=2R2
(B) R2=2R1
(C) R2=4R1
(D) R1=R2
Explain the answer with reasonings
Answers
Answered by
0
2R1=R2 according to the formula p=v square/r
Similar questions