Jatinder Singh Solutions for Chapter: Electric Power and Household Circuits, Exercise 1: Expected Questions

A geyser rated $1500 \mathrm{W}, 250 \mathrm{V}$ is connected to $250 \mathrm{V}$. Calculate the energy consumed in $50 \mathrm{hours}$.

A geyser rated $1500 \mathrm{W}, 250 \mathrm{V}$ is connected to $250 \mathrm{V}$ mains. Calculate cost of energy consumed at $\mathrm{Rs}. 2.20$ per $\mathrm{kW} \mathrm{h}$.

An electric heater is marked $1000 \mathrm{kV} \mathrm{A}, 220 \mathrm{V}$. If the heater is operated for two hours, calculate the energy used in $\mathrm{kW} \mathrm{h}, \mathrm{J}$.

Calculate the electrical energy used (in SI units) consumed by a $100 \mathrm{W}$ bulb and a $60 \mathrm{W}$ fan connected in parallel for five minutes.

For what length of time, we can use a $100 \mathrm{W}$ bulb to consume just one commercial unit of energy costing $\mathrm{Rs}. 2$.

For what length of time, we can use a $1000 \mathrm{W}$ immersion road to consume just one commercial unit of energy costing $\mathrm{Rs}. 2$.

For what length of time, we can use a $2 \mathrm{KW}$ electric iron to consume just one commercial unit of energy costing $\mathrm{Rs}. 2$.

For what length of time, we can use a $5 \mathrm{KW}$ electric stove to consume just one commercial unit of energy costing $\mathrm{Rs}. 2$.