What amount of heat are you sharing in a conductor with a resistance of 15 Ohm for 30 seconds, if the voltage at its ends is 20V?
These tasks: R (resistance of the taken conductor) = 15 Ohm; t (duration of current passage through the conductor) = 30 s; U (voltage at the ends of the conductor) = 20 V.
The amount of heat that will be released on the taken conductor is determined using the Joule-Lenz law: Q = U ^ 2 * t / R.
Calculation: Q = 20 ^ 2 * 30/15 = 800 J.
Answer: On the taken conductor, 800 J of thermal energy will be released.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.