Solution to task 380 from Chertov´s for extramural stud

Solution to task 380 from Chertov´s for extramural stud

380. The current in the conductor changes with time according to the law I = I0e-αt. Determine the amount of heat that will be released in a conductor with a resistance of R = 20 Ohm during the time during which the current will decrease by a factor of e. The coefficient α is taken equal to 2.10-2 s-1.