Question

when the time taken to complete a given amount of wort increases then

a)power increases b)power decreases c)energy increases d) energy decreases

Answer 1

energy decreases is the answer....

Answer 2

$\blue{Here\:is\:your\: Answer}$

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Option B

Because:-
$power = \frac{work \: done}{time \: taken} \\ since \: time \: is \: increasing \: therefore \: power \: wll \: decrease$
No effect on Energy because

Work done = change in Energy.
By increasing time there will be no change in work hence no change in Energy✔️