Which electric bulb is the most efficient?

(a)  

What is the most common type of electrostatic generator in use today?

(a)  

What type of lamp is made by passing current through a narrow tube of gas?

(a)  

What type of lamp produces light by heating a thin piece of wire?

(a)  

What device stores electricity on foil lining the inside of a glass jar?

(a)  

What device converts absorbed sunlight directly into electricity?

(a)  

What part of an electric motor is freely rotating?

(a)  

What part of an AC electric generator keeps its wires from twisting?

(a)  

What converts electricity into sound waves?

(a)  

What is designed to convert electricity into back-and-forth motion?

(a)  

What uses electromagnets to allow communication over long distances?

(a)  

What is an electrical switch operated by an electromagnet?

(a)  

What is the name of the negative terminal of a voltaic cell?

(a)  

Wht is the device used to store electric charge developed by Musschenbroek?

(a)  

What is the first electric light suitable for household use?

(a)  

In order to boost voltage in electrochemical cells, they can be arranged how?

(a)  

What is the device used to protect buildings and other structures from lightning strikes?

(a)  

What is the ability of magnetism to convert mechanical motion into electric current?

(a)  

What is a device that increases or decreases the voltage of alternating current?

(a)  

What are one or more electrochemical cells connected to terminals as a single source of current?

(a)  

What is a material that glows when exposed to radiation?

(a)  

What is a permanent magnet used to provide a stationary magnetic field?

(a)  

What is also known as corona discharge?

(a)  

In a voltaic cell, what is the positive terminal called?

(a)  

What combination of long and short clicks are transported over long distances to communicate a message?

(a)  

What is the general term for a device that produces static electricity?

(a)  

What type of lamp is filled with neon gas?

(a)  

What type of electrochemical cell can not be recharged?

(a)  

What device uses electromagnetic induction to produce electricity?

(a)  

Who discovered that mechanical motion can produce electricity by magnetic force?

(a)  

Who patented the telegraph?

(a)  

Whose experiment showed that static electricity causes lightning?

(a)  

Who built the first electrostatic generator?

(a)  

Who invented the most common electrostatic generator in use today?

(a)  

What is a modern lamp that consists of a long, coiled tube and can be used in sockets designed for incandescent lamps?

(a)  

Where on an object does electric charge always move on the object?

(a)  

What is the most important device for converting electricity into motion?

(a)  

What is the method of electrostatically reproducing images on paper?

(a)  

What is a device in which a conducting fluid passes though a magnetic field at high speeds?

(a)  

What is a small AC generator that recharges a car's battery and operates its electrical system while the car is running?

(a)  

What is a semiconductor device that emits light when a direct electric current is applied?

(a)  

Where does charge concentrate on a sphere?

(a)  

Where does charge concentrate on a shape that isn't a sphere?

(a)  

What comes from opposite charges in a cloud and on the ground?

(a)