Electricity: Magnetic and Heating Effects Flashcards

A set of fill-in-the-blank flashcards covering the magnetic and heating effects of electric current, as well as the types of electric cells and batteries.

The discovery that electricity and magnetism are linked was made by the scientist __________ in $1820$.

Hans Christian Oersted

The phenomenon where an electric current flowing through a conductor produces a magnetic field around it is known as the __________.

magnetic effect of electric current

The region around a magnet or a current-carrying wire where its magnetic effect can be felt is called a __________.

magnetic field

A current-carrying coil that behaves as a magnet is called an __________.

electromagnet

To make an electromagnet stronger for practical applications, an __________ is usually inserted into the core of the coil.

iron core

The strength of an electromagnet can be changed by varying the amount of electric current or the __________ of the coil.

number of turns

When an electric current passes through a conductor and causes it to get warm, this is known as the __________.

heating effect of electric current

A __________ wire is commonly used to demonstrate the heating effect because it offers higher resistance than copper wire.

nichrome

Different conductors offer different levels of opposition to current flow, a property known as __________.

resistance

Household appliances like electric irons and room heaters contain a rod or coil of wire called a __________ that generates heat.

heating element

A Voltaic cell, also known as a __________ cell, contains two metal rods and an electrolyte.

Galvanic

In a Voltaic cell, the rods dipped in the electrolyte are called __________.

electrodes

In the lemon battery experiment, the __________ acts as the electrolyte that helps conduct electricity.

lemon juice

A __________ cell is called such because its electrolyte is a thick moist paste rather than a liquid.

dry

In a standard dry cell, the __________ acts as the negative terminal.

zinc container

The most common type of rechargeable battery found in modern portable devices is the __________ battery.

lithium-ion

In a dry cell, the __________ at the center covered with a metal cap acts as the positive terminal.

carbon rod

The amount of heat generated in a wire depends on the material, thickness, length, and the __________ for which the current flows.

duration

Deep inside the Earth, the movement of __________ in the core creates electric currents that generate the Earth's magnetic field.

liquid iron

Future rechargeable batteries that replace liquid electrolytes with solid materials are known as __________ batteries.

solid-state