If one unit of electricity costs Rs.5 and the total electrical energy consumed in 1 month is 250 kWh, what is
the cost of electricity in that month?

Correct option is B

Given:
Cost per unit of electricity = Rs.5
Total energy consumed = 250 kWh
Formula Used:
Cost of electricity = Units consumed × Cost per unit
Solution:
Cost of electricity = 250 kWh × Rs.5/kWh = Rs.1250