Deriving alternate power formulas using Ohm's Law substitution

Understanding energy in electric circuits and kilowatt hours

Understanding efficiency and summarizing power formulas

Clarifying the differences between voltage, power, and energy

Finding power dissipated by a resistor in a series-parallel circuit

Finding resistance of resistor A using Ohm's Law and power formulas

Finding total current leaving a battery using power addition

Calculating energy used by a resistor using power and time

Finding battery voltage using power and resistance in a series-parallel circuit

Finding current through a parallel resistor using Kirchhoff's junction rule

Calculating total power dissipated by a multi-resistor circuit

Calculating efficiency of an electric crane using gravitational potential energy

Finding input power of a light bulb using efficiency