Physics Chapter 23-24 Electricity
18 January 2019
1. Electric circuit: An electric circuit is a path in which electrons from a voltage or current source flow.
2. Battery: An electric battery is a device consisting of one or more electrochemical cells with external connections provided to power electrical devices such as flashlights, smartphones, and electric car
3. Ampere: is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 m apart in vacuum, would produce between these conductors a force equal to2×10−7 newton per metre of length.
4.Volt: As energy consumption of one joule per electric charge of one coulomb. 1V = 1J/C. One volt is equal to current of 1 amp times resistance of 1 ohm: 1V = 1A ⋅ 1Ω
5. Electric Current: An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire
6. Resistance: The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it: ... Whether or not a material obeys Ohm's law, its resistance can be described in terms of its bulk resistivity.
7. Power: The rate of doing work or transferring heat, the amount of energy transferred or converted per unit time.
8. Kilowatt-hour: is a unit of energy equivalent to one kilowatt(1 kW) of power expended for one hour (1 h) of time.
9. Series Connection: When there are two or m...