Question

An electric heater draws a current of 10A from a 220V supply. What is the cost of using the heater for 5 hours everyday for 30 days if the cost of 1 unit (1 kWh) is Rs 5.20?

Answer 1

To calculate the cost of using the electric heater, multiply the current, voltage, and time. Then, convert the energy consumed to units (kWh) and multiply by the cost per unit.

Step-by-step explanation:

To calculate the cost of using the electric heater, we need to find the total energy consumed by the heater and then multiply it by the cost per unit. The energy consumed can be found by multiplying the current (10 A) by the voltage (220 V) and the time (5 hours everyday for 30 days).

Energy consumed = Current x Voltage x Time

Once we have the energy consumed, we can convert it to units (kWh) by dividing it by 1000, and then multiply it by the cost per unit (Rs 5.20).

Cost of using the heater = (Energy consumed / 1000) x Cost per unit