calculate the amount of heat energy produce when 1A current flow through 1 om resistance were for 1 hour
Answers
Answer:
The formula is heat produced = voltage squared divided by resistance
Answer:
ok
Explanation:
you need to know both the power rating (in Watts) and the time of operation (in seconds) to calculated the heat (i.e. energy in Joules). Many resistors are marked with a power rating in Watts (but this is often an operational “suggestion” somewhat akin to a “use by date” in the supermarket).
The larger the power rating, the greater the physical size of the resistor to dissipate the heat.
All resistors have a maximum power rating and if exceeded will result in the resistor overheating and becoming damaged.
Standard resistor power rating sizes are 1/8 W, 1/4 W, 1/2 W, 1 W, and 2 W.
Most resistors are marked in terms of their resistance. Heating of components generally increases their resistance, and physically large resistors dissipate heat better than small ones. Some have temperature limiting characteristics as in paraffin melters, coffee warmers, and aromatherapy devices, etc..