Question

How much time will it takes to perform 440 joule of a work at a rate of 11 W?

Answer 1

Answer:

H = 440 j

P = 11 w

P = h/t

11 = 440 / t

11t = 440

t = 440 / 11

t = 40 / S

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Answer 2

Given :-

Power required = 11 W

Work performed = 440 J

To Find :-

The time required to perform the work.

Solution :-

We know that,

• w = Work
• t = Time
• p = Power

By the formula,

$\underline{\boxed{\sf Power=\dfrac{Work \ done}{Total \ time} }}$

Given that,

Power (p) = 11 W

Work (w) = 440 J

Substituting their values,

11 = 440/t

11t = 440

t = 440/11

t = 40 sec

Therefore, it takes 40 sec to perform the work.