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An electric heater has heating coils A a...

An electric heater has heating coils A and B , when coil A is switched on, the water boils in 10 minuts, and when coil B is switched on the water boils in 20 minuts. Calculate the time taken by water, to boil if the coils conneted in
(a) Series and (b) Parallel all switched on.

Text Solution

Verified by Experts

The correct Answer is:
(a) `t_(s) =30 min,`
(b) `t_(p)=20/3min`
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