Question

A light bulb is supplied with 100 J of energy each
second.
1.How many joules of energy leave the bulb each
second in the form of heat and light?
2.If 10J of energy leave the lamp each second in the
form of light, how many joules leave each second
in the form of heat?​

Answer 1

Answer:

a.95J

b.90J

Explanation:

.Applying energy conservation laws:-  

Energy  Into Bulb=

Given  that light energy=5J,and Total Energy=100J

b. Applying the laws in a above.

Total Energy=100J

Light Energy=10J