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To boil a certain mass of water, a coil will take a time of t_(1) and another coil will take a time of t_(2). What will be the time taken when the coils are connected in (i) series (ii) in paralle? |
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Answer» SOLUTION :(i) In series `H=(V^(2))/(R ).t` As H, V and are constants, `R prop t` `"In series,"R=R_(1)+R_(2)""therefore t_(s)=t_(1)+t_(2)` (ii) In parallel `R=(R_(1)R_(2))/(R_(1)+R_(2))""therefore t_(p)=(t_(1)t_(2))/(t_(1)+t_(2))` |
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