Science GA 1.3

Question 1

Before the term magnet was used. Found by Greeks more than 2000 years ago in a coastal district of ancient Thessaly, Greece. These iron-rich ores had an amazing property of attracting pieces of iron

Answer 1

Lodestones

Question 2

He made the first artificial magnet

Answer 2

William Gilbert

Question 3

Made an experiment and demonstrated in his class that a compass was being deflected when it was placed near a current-carrying wire. This was the birth of combining electricity and magnetism or electromagnetism after a long time of studying electricity and magnetism independently

Answer 3

Hans Cristian Oersted

Question 4

Suggested that electric current could exert a magnetic force and a current-carrying wire produced a magnetic field. He found out that when the currents of the wires are in the same direction, the two wires attract each other while they repel if the currents are in opposite directions because of the action-reaction magnetic force produced by these currents

Answer 4

Andre Marie Ampere

Question 5

Currents that are Facing the Same Direction

Answer 5

They attract each other

Question 6

Currents that are Facing Opposite Directions

Answer 6

They repel each other

Question 7

Particles with electric charge interact by an electric force. Charged particles in motion produce and respond to magnetic forces as well

Answer 7

Electromagnetism

Question 8

This region around the charged particle exerts a force on other charged particles either attracting or repelling them

Answer 8

Electric Field

Question 9

This region around the magnet where magnetic effects can be detected

Answer 9

Magnetic Field

Question 10

Used to plot magnetic field patterns

Answer 10

Compass

Question 11

When two strong magnets are arranged such that their opposite poles are facing each other, their magnetic fields combine

Answer 11

Attraction

Question 12

It is used to find the direction of the magnetic field using your right thumb in the direction of the current in the wire and curling your fingers. Your fingers will be curled in the same direction as the magnetic field around the wire

Answer 12

Curl Right Hand Rule

Question 12

When two strong magnets are arranged such that the same poles are facing each other, their magnetic fields deter

Answer 12

Repulsion

Question 13

Are devices consisting of a core of magnetic material surrounded by a coil through which an electric current is passed to magnetize the core. Is used wherever controllable magnets are required, as in contrivances in which the magnetic flux is to be varied, reversed, or switched on and off

Answer 13

Electromagnets

Question 14

-Is the production of voltage across an electric conductor situated in a changing magnetic field or a conductor moving through a stationary magnetic field
-Was first investigated by Faraday in 1831 when he successfully induced current in a cylindrical coil of copper wire.

Answer 14

Electromagnetic Induction

Question 15

-He gave one of the fundamental laws of electromagnetism
-Was first investigated by him

Answer 15

Micheal Faraday

Question 16

-Whenever there is relative movement between the magnet and the coil of wire in the setup discussed, voltage is induced
-A changing magnetic field will induce voltage in the coil, causing current to flow along the coil of wire

Answer 16

Electromotive Force (EMF)