a) The power shortage not followed a regular trend. It decreased from 1991 to 1992 and then increased in 1993 and then decreased upto 1995 and then increased upto 1997 from the table given.
b) The effect of shortage percentage of power on human life:
Agriculture: Agriculture mainly depends on electric power for water supply. If there is no sufficient power is available then the yield of food material decreases.
Industry: Industries mainly run with electric power. If electric power is not sufficient then it is major set back for their production.
Economy: Economy drastically affected by shortage of power which will also effects the economic status of people. Health: Shortage of power also affects the health of people because many cured by operations which required power.
Science and Technology : The growth of science and technology completely get damage due to lack of power because they are mainly depend on power. So shortage of power drastically affect human life.