Welcome! The Topic For Today Is Magnetism and Electromagnetic Induction

Your Topic Magnets The Nature of Magnetic Fields DevicesRight Hand RuleCalculations Bonus Question: Wager up to your teams total points

Topic 1: 200 Question: Finish this sentence: Two north poles will _________, but a north and south pole will_______. Answer Repel, attract

Topic 1: 400 Question: If you allow a magnetized paperclip to float in water undisturbed, it will _____________ Answer Align to the earth’s north and south pole.

Topic 1: 600 Question: If I break a bar magnet in half, what will happen to the two pieces? Answer Two new magnets will be formed

Topic 1: 800 Question: Regions on a bar magnet that produce magnetic forces are called magnetic Answer poles

Topic 1: 1000 Question: What are two ways that magnets are like electric charges? Answer They can both attract and repel without touching & The strength of their interaction depends on the distance of separation.

Topic 2: 200 Question: Which end is north and which is south? Answer right is north, left is south

Topic 2: 400 Question: Magnetic fields are produced by Answer Moving charged particles or magnetic domains

Topic 2: 600 Question: The earth’s magnetic field is most likely due to Answer convection currents in the earths molten core

Topic 2: 800 Question: Explain what you can tell from this picture with regard to the compasses and wire.. Answer Option b has current

Topic 2: 1000 Question: Describe the two types of electron motion that produce the magnetic field in a bar magnet. Answer electrons in constant motion about atomic nuclei & electrons spinning about their own axes like tops

Topic 3: 200 Question: A device consisting of a coil that is mechanically rotated in a stationary magnetic field is called Answer generator

Topic 3: 400 Question: A device that transforms electrical energy to mechanical energy is a Answer motor

Topic 3: 600 Question: A device that uses two coils around an iron core to change the voltage across a circuit is called a Answer transformer

Topic 3: 800 Question: What does a step-up transformer do? Answer Increases the voltage

Topic 3: 1000 Question: The primary coil of a transformer has 1000 turns on it and the secondary coil has 2000 turns on it. What type of transformer is this? Answer Step up

Topic 4: 200 Question: A wire with flowing electricity is coming up from the floor to the ceiling. Describe the magnetic field around the wire. Answer

Topic 4: 400 Question: Electrons are toward the white board, describe the magnetic field. Answer

Topic 4: 600 Question: Find the direction of the force. Answer Out of the page

Topic 4: 800 Question: Describe the magnetic field around the current. Answer Out of page above, into below

Topic 4: 1000 Question: What is the direction of current? Answer down

Topic 5: 200 Question: 0.10 m of wire is placed between the poles of a large magnet. The magnet has a field strength of 2.0 T. The current in the wire is 4.0 A. What is the magnitude of force on the wire? Answer 0.8 N

Topic 5: 400 Question: A transformer has 12,000 v input to the primary coil. The primary coil has 2400 turns of wire while the secondary has just 500 turns of wire. What is the voltage output of the secondary coil? Answer 2500

Topic 5: 600 Question: How many turns of wire will a transformer need in its secondary coil if the primary coil has 50 turns and voltage is stepped up from 10 v to 1000 v? Answer 5000

Topic 5: 800 Question: A transformer has 1200 v input to the primary coil. The primary coil has 240 turns of wire while the secondary has just 50 turns of wire. What is the voltage output of the secondary coil? And what type of transformer is it? Answer 250 and a step down

Topic 5: 1000 Question: A 50.0 cm long wire carries a 15.0 A current which flows from right to left. When the magnetic field strength is 0.2 Tesla, what is the magnitude of the magnetic force acting on the wire? Answer 1.5 N

Bonus Question: up to your total Question: A 60.0 cm long wire carries a 10.0 A current which flows from right to left. When the magnetic field strength is 0.2 Tesla, what is the magnitude of the magnetic force acting on the wire? Answer 1.2 N

The Winner Of The Last Round Write Down How Much Money You Are Willing To Risk If You get the Question write you win that money If you get it wrong you Loss the money!

The Winner Of The Last Round Write Down How Much Money You Are Willing To Risk If You get the Question write you win that money If you get it wrong you Loss the money!