Energy and Power Questions

• In 40 kW, there are
• A half-watt is equal to how many milliwatts?
• A 6 V battery is connected to a 300 Ω load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?
• A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?
• How much continuous current can be drawn from a 60 Ah battery for 14 h?
• Energy equals power multiplied by time.
• The capacity of a battery is measured in milliamperes.
• Power rating is related to resistance value.
• A resistor normally opens when it burns out.
• Energy is equal to power multiplied by voltage.
• Watt's law states the relationships of power to energy.
• The power rating of a resistor determines the minimum power that it can handle safely.
• The joule is a unit of energy.
• The watt is the unit of power.
• A battery is one type of power supply that converts chemical energy into electrical energy.