What do you understand by 1 V potential difference? 1 V potential difference means that when the 1-coulomb charge is transferred from one end of the conductor to the other, 1 Joule work takes place.
What is the voltage of the ground wire? The voltage of the ground wire is zero.
What is a kilowatt-hour? Kilowatt-hour is a unit of work or energy. The work done by a device of 1 kilo-watt power in one hour is called one kilowatt-hour.
What do you understand by 1 W of electricity? At 1 V voltage difference, if 1 A current flows through a device then the power of that circuit is 1 W.
What is the series connection? When the components of the circuit are connected one after another then the circuit is said to be in a series connection.
What is the law of cross-sectional area for resistance? At constant temperature, if the length of a conductor is kept constant then the resistance of that conductor is proportional to the cross-sectional area of that conductor.
What is a galvanometer? The device used to check the presence of electric flow is called a galvanometer.
What is the series connection of resistors? If two or more resistors are connected one after another then the connection is a series connection.