Your electricity bill counts energy in kilowatt-hours. One kilowatt-hour is the energy a 1 kW appliance uses in 1 hour, so energy in kWh is just power in kW times the time in hours. Pick an appliance, set how long it runs, predict the energy used, then switch it on. The meter disc spins, the kWh climb, and the cost adds up.
MissionUse exactly 6.0 kWh of energy (within 0.25 kWh).Round 1Streak 0Best 0
Appliance:
The energy used will be:
power P1.0 kW
time on t0.0 h
energy E = P × t0.0 kWh
cost at $0.30 per kWh$0.00
E = P × t = 1.0 × 6.0 = 6.0 kWh. One kWh = 3.6 MJ.