Question

with solution plzzzz​

Answer 1

i hope this will help uuuuu....

2) 1500 joule

Answer 2

Answer:

option 3 )  15000 calorie

                   is the right answer.

Explanation:

given:

P = 150 W

t = 7 min = 420 seconds  

Heat produced = V I t

                         = P t            where  P = V I     is  power

                         = 150 * 420

                         = 63000 J

we know that ,  

1 calorie = 4.184 J

by converting joules to calories,

we get heat produced = 63000 / 4.184

                                     = 15, 057 calories

         heat  produced  ≅  15,000 calories.

Thus you got the answer !