Question

energy
10
8
6
4
2
0
e_r e_e e_o
a lamp converts electrical energy into radiant energy and heat. initially, it has 9 units of electrical energy.
what is the total energy?
8 units
10 units
9 units
6 units

Explanation:

According to the law of conservation of energy, energy is conserved during conversion. The lamp initially has 9 units of electrical energy, and when it converts energy, the total energy remains the same as the initial electrical energy because energy is neither created nor destroyed, just transformed. So the total energy should be equal to the initial electrical energy, which is 9 units.

Answer:

C. 9 units (assuming the option with "9 units" is labeled as C; if the original options have different labels, adjust the label accordingly, e.g., if the "9 units" option is the third one, then "3. 9 units")