325 degrees should be right in the ball park.
325 - 375 degrees Fahrenheit
Only if what you're cooking is considered unhealthy. The method you use to deploy heat (gas, electric, camp fire) has no significance.
That will vary depending on the individual stove.
Using porcelain pans on an electric stove is considered generally safe. Follow the manufacture's care suggestions and keep an eye on them Don't let them boil dry. Excessive heat can cause porcelain to melt.
On an electric stove, the heat coil directly touches the pot, facilitating the conduction or direct heat transfer. On a gas stove, the burning fuel transfers heat to a pot by both radiation and convection.
by radiation
heat and chemical energy
200-250
yes
electric, but it alot of times depends on the stove quality.
Heat
Convection - Hot air circulating from a heater Conduction - A hot stove with a pan on it Radiation - A hot stove
Because the stove burner conducts the heat through the pan to cook the food.