To calculate the cost of operating the lamp for 24 hours, we first need to determine the power consumption of the lamp in watts.

Given:Current (I) = 1AVoltage (V) = 200VTime (t) = 24 hours

Power (P) = V x IPower (P) = 200V x 1APower (P) = 200W

Since power is given in watts and NEPA charges 5k per kWhr, we need to convert the power from watts to kilowatts:Power (P) = 200W = 0.2 kW

Now, we can calculate the cost of operating the lamp for 24 hours:Cost = Power x Time x Cost per kWhrCost = 0.2 kW x 24 hours x 5k/kWhrCost = 4.8 kWh x 5kCost = 24k