An electric kettle has two coils. When one of these is switched on, the water in the kettle boils in 6 minutes. When the other coil is switched on, the water boils in 3 minutes. If the two coils are connected in series, find the time taken (in minute) to boil the water in the kettle.
Answers
Answered by
2
Solution :
Heat produced, H=V2tIRH=V2tIR
=>R∞t=>R∞t
Given R1=6ΩR1=6Ω
and R2=3ΩR2=3Ω
∴R1R2=63∴R1R2=63
=2Ω=2Ω
∴R1=2R2∴R1=2R2
When the coils are connected in series , the net resistance , R1=R1+R2=R2+2R2=3R2R1=R1+R2=R2+2R2=3R2
∴R1R2∴R1R2=R2+2R2=R2+2R2
=3R2=3R2
∴R1R2=t13∴R1R2=t13
t1=3R1R2t1=3R1R2
=3×3R2R2=3×3R2R2
=9m=9m
Answer : 9 m
Heat produced, H=V2tIRH=V2tIR
=>R∞t=>R∞t
Given R1=6ΩR1=6Ω
and R2=3ΩR2=3Ω
∴R1R2=63∴R1R2=63
=2Ω=2Ω
∴R1=2R2∴R1=2R2
When the coils are connected in series , the net resistance , R1=R1+R2=R2+2R2=3R2R1=R1+R2=R2+2R2=3R2
∴R1R2∴R1R2=R2+2R2=R2+2R2
=3R2=3R2
∴R1R2=t13∴R1R2=t13
t1=3R1R2t1=3R1R2
=3×3R2R2=3×3R2R2
=9m=9m
Answer : 9 m
Answered by
4
❤ hey buddy ❤
⭐ = 9m ⭐
✌ hope it's help you ✌
✔✔ Mark me brainlist ✔✔
⭐ = 9m ⭐
✌ hope it's help you ✌
✔✔ Mark me brainlist ✔✔
Similar questions