Data

Copy and paste the text below. It is read-only. Select All

insulator Rubber makes a great __________________. That is why power lines are coated in rubber. static Stationary electricity is also called ________ electricity. battery A __________ consists of one or more electrochemical cells that supply electrons released by a chemical reaction. wet, dry There are two types of cells for batteries; a ________ cell and a _________ cell. circuit breaker Most houses have between ten and forty circuits protected by ________ _________ switches that automatically trips if too much current flows through it. lightning rod A device used to protect buildings from lightning is called a ___________ ______. switch A ________ allows you to open or close the circuit by opening or closing a gap in the current path. electrons An electrical charge is usually produced by the removal or addition of __________. ampere Electrical current is measured in a unit called the ______________. kilowatt hours Electrical energy is dispensed and billed in units called __________-________. series circuit When loads are connected one after another on the same path it is called a __________ _________. generator A _______ is basically one or more coils of wire rotated in a magnetic field by some form of prime mover such as a motor or tubine powered by steam, water or wind. direct current Current that flows in one direction through a conductor is called _______ _________. resistor A device that can change the voltage within portions of a circuit is called a ____________. attracted When two objects with opposite charges approach each other, they are ________ to each other. electroscope Charges can be detected with an instrument called an _______________. like, opposite The Law of Charges states that _________ charges repel; _________ charges attract. Ohm's Law The statement, "In a DC circuit component of resistance, the current through the component is directly proportional to the potential difference applied to the component", is known as _______ _______. electrical current Electricity that involves continuously moving charges is called ________ _________. semi conductors Materials that allow limited elctron flow or conduct only under certain conditions are called _______-________. ohms Resistance is measured in units called ________. fuses Older homes with original wiring may use _______ as a protective device. parallel circuit In a ________ ________ the loads are connected in separate branches of the circuit. lightning __________ strikes on the earth about one hundred times every second. Laden jar A ________ ____ is an early device used to store electrical charges. ground fault circuit interrupter The rounded third prong on a standard plug is the ______-______-_______ ___________ device. electrical circuit The path that the current flows is called the _________ ______. coulomb The SI unit for electrical charge is the _________. repel When two objects with the same charge approach each other, the objects _______ from each other. volt We measure the potential difference with a unit called the ________. solar cells Photovoltaic devices are also called ________ _______. electrical discharge The loss of static charge as electrons move to another object is called ___________ __________. capacitors Modern charge-storing devices are called __________. conductors Wood, glass and rubber are not good ________ of electricity.