An electric refrigerator rated $400\, W$ operates $8$ hour per day. What is the cost of the energy to operate it for $30$ days at ₹ $3.00$ per $k W h ?$
An electric refrigerator rated $400\, W$ operates $8$ hour per day. What is the cost of the energy to operate it for $30$ days at ₹ $3.00$ per $k W h ?$
Given $P=400 W$, time $=8$ hours per day for $30$ days, rate $=₹ 3.00$ per $kW h$
Total energy consumed in $30$ days
$Q = P \times t=400 \times 8 \times 30$
$=96000 Wh$
$=96 kW h$
Thus, the cost of energy to operate the refrigerator for $30$ days $=96 \times 3=$₹ $288.00$
Similar Questions
How many electrons will there be in $1.6\, C$ charge?
How many electrons will there be in $1.6\, C$ charge?
What happens to the resistance of a conductor when temperature is increased ?
What happens to the resistance of a conductor when temperature is increased ?
The quantity of charge flowing past a point multiplied by time is current.
The quantity of charge flowing past a point multiplied by time is current.
What is the unit of electric current?
What is the unit of electric current?
Name and define the SI unit of current. Calculate the number of electrons that flow through a conductor in $1$ second to constitute a current of $1$ ampere. (Charge on an electron $=1.6 \times 10^{-19}$ coulomb)
Name and define the SI unit of current. Calculate the number of electrons that flow through a conductor in $1$ second to constitute a current of $1$ ampere. (Charge on an electron $=1.6 \times 10^{-19}$ coulomb)