Question

There are two separate coils in a heater. If one coil is used then it takes 20 minutes to boil a given amount of
water completely. But when its other coil is used then it takes 5 minutes to boil the same amount of water
Calculate the time taken to boil the same amount of water using the same source when the two coils are
connected (1) in series, and (2) in parallel​

Answer 1

Answer:

in series

Explanation:

because same amount heat is not transfer to second coil