Question

A battery supplies 100J of energy to make a torch work. if the torch produces 10J of light energy, how much heat energy will it produce?

Answer 1

SI SYSTEM OF UNITS

• First, please note that in the SI system of units when using abbreviations for names of units which are named for people - like Isaac Newton, James Watt etc. - a capital letter is used, so you would write 100 N or 500 W.
• If you choose not to use the abbreviation but prefer instead to use the name of the person you would write 100 newtons, 500 watts.
• Since the unit for energy is named for James Prescott Joule you must write 100 J or 100 joules .

So the energy produce to make torch work is 100 J and light energy pf the torch produce is 10 J .

THE FORMULA IS

heat energy = energy produce - light energy

                     = ( 100-10 ) J

                    =  90 J

#SPJ2

Answer 2

Answer:

10 j

Explanation:

heat is same as light.