chapter25
... When two coils are placed near each other, alternating current in one (the primary, which is the one connected to the power source) induces a changing magnetic field. The second coil is within that field, so it has a current induced in it. If the first coil has fewer loops than the second, the secon ...
... When two coils are placed near each other, alternating current in one (the primary, which is the one connected to the power source) induces a changing magnetic field. The second coil is within that field, so it has a current induced in it. If the first coil has fewer loops than the second, the secon ...
4/23 Induction Review
... “changing” external field. The loop then reacts as in Ch 21. In fact, battery operated loops resist the changing field caused by themselves! Called “Self Induction” see 22.8 ...
... “changing” external field. The loop then reacts as in Ch 21. In fact, battery operated loops resist the changing field caused by themselves! Called “Self Induction” see 22.8 ...
physics-p5-what-you-should
... force on a permanent magnet, or on another current-carrying wire or coil nearby I understand that a current-carrying wire, if placed in a magnetic field whose lines of force are at right-angles to the wire, experiences a force at right angles to both the current direction and the lines of force of t ...
... force on a permanent magnet, or on another current-carrying wire or coil nearby I understand that a current-carrying wire, if placed in a magnetic field whose lines of force are at right-angles to the wire, experiences a force at right angles to both the current direction and the lines of force of t ...
Producing Electric Current
... Wire coil is wrapped around an iron core and placed between the poles of a permanent magnet. ...
... Wire coil is wrapped around an iron core and placed between the poles of a permanent magnet. ...
1. (i) iron 1 for 1 mark (ii) 20 2 gains 2 marks else working gains 1
... use a coil with more turns or increase loops of wire or more coils use a stronger magnetic field or magnet or magnets closer together wind coil onto an iron core rotate coil faster reduce resistance of the coil or bulb or circuit or use thicker wire or increase ...
... use a coil with more turns or increase loops of wire or more coils use a stronger magnetic field or magnet or magnets closer together wind coil onto an iron core rotate coil faster reduce resistance of the coil or bulb or circuit or use thicker wire or increase ...
Answers
... a) What happens? It accelerates at A) 9.8 m/s2 B) less than 9.8 m/s2 C) greater than 9.8 m/s2 D) a decreasing rate We know that a moving magnet will induce a current. That current will generate a magnetic field that will repel the magnet. From the previous demonstration, we know that a greater speed ...
... a) What happens? It accelerates at A) 9.8 m/s2 B) less than 9.8 m/s2 C) greater than 9.8 m/s2 D) a decreasing rate We know that a moving magnet will induce a current. That current will generate a magnetic field that will repel the magnet. From the previous demonstration, we know that a greater speed ...
Please Do Now! - Bloomsburg Area School District
... of wire, and a motor shaft. The only difference is the type or size of the power source. If model cars are remote controlled, then electromagnets can also be used to power the electric motors. ...
... of wire, and a motor shaft. The only difference is the type or size of the power source. If model cars are remote controlled, then electromagnets can also be used to power the electric motors. ...
