Name
... 30. Interpreting Graphics In Figure 21-3, use the direction of the magnetic field lines to determine what type of magnetic pole is located at the geographic North Pole. 31. Predicting Use Figure 21-3 to predict where Earth’s magnetic field is strongest. Explain your answer. 32. Interpreting Graphics ...
... 30. Interpreting Graphics In Figure 21-3, use the direction of the magnetic field lines to determine what type of magnetic pole is located at the geographic North Pole. 31. Predicting Use Figure 21-3 to predict where Earth’s magnetic field is strongest. Explain your answer. 32. Interpreting Graphics ...
30-1 Field Near A Straight Wire
... the right. We only need to consider the current flows enclosed in the loop. Next we divide the loop into differential loop segments that are tangential to the loop at all points. Each of these will make some angle è to the actual magnetic field at that point. We do not actually know the direction of ...
... the right. We only need to consider the current flows enclosed in the loop. Next we divide the loop into differential loop segments that are tangential to the loop at all points. Each of these will make some angle è to the actual magnetic field at that point. We do not actually know the direction of ...
Chapter 31
... bulk pieces of metal moving through a magnetic field The eddy currents are in opposite directions as the plate enters or leaves the field Eddy currents are often undesirable because they represent a transformation of ...
... bulk pieces of metal moving through a magnetic field The eddy currents are in opposite directions as the plate enters or leaves the field Eddy currents are often undesirable because they represent a transformation of ...
What state and other requrements
... This became the first synthetic superconductor. Since then, it was discovered that superconductors completely expel magnetic fields. They are able to do this thanks to Lenz’s law which essentially states that when a conducting material is exposed to a changing magnetic field, a current will run in t ...
... This became the first synthetic superconductor. Since then, it was discovered that superconductors completely expel magnetic fields. They are able to do this thanks to Lenz’s law which essentially states that when a conducting material is exposed to a changing magnetic field, a current will run in t ...
Chapter 28
... Given a point charge, q, we know that it generates an electric field regardless of whether it is moving or not If the charge is in fact moving then the charge also generates a magnetic field The magnetic field generated by the charge however does not behave in the same way the electric field of the ...
... Given a point charge, q, we know that it generates an electric field regardless of whether it is moving or not If the charge is in fact moving then the charge also generates a magnetic field The magnetic field generated by the charge however does not behave in the same way the electric field of the ...
electromagnetic induction stud
... 1. What is the induced EMF in a wire that is 20 cm long, moving at an angle of 300 to a 0.08 T magnetic field with a velocity of 5 m/s 2. A flat 300 turn coil has a resistance of 3Ώ. The coil covers an area of 15cm2. At what rate must the magnetic field change in order to induce a current of 0.75 A ...
... 1. What is the induced EMF in a wire that is 20 cm long, moving at an angle of 300 to a 0.08 T magnetic field with a velocity of 5 m/s 2. A flat 300 turn coil has a resistance of 3Ώ. The coil covers an area of 15cm2. At what rate must the magnetic field change in order to induce a current of 0.75 A ...
Faraday`s Law of Induction
... • If the magnet is held stationary and the coil is moved toward or away from the magnet, the galvanometer needle will also deflect. • From these observations, you can conclude that a current is set up in the circuit as long as there is relative motion between the magnet and the coil. • This current ...
... • If the magnet is held stationary and the coil is moved toward or away from the magnet, the galvanometer needle will also deflect. • From these observations, you can conclude that a current is set up in the circuit as long as there is relative motion between the magnet and the coil. • This current ...
Magnetic Forces – Charged Particles
... time. If the magnetic and electric forces are equal FE and opposite, the net force on the charged particle is zero resulting in the particle moving undeflected through the fields. The forces are balanced, FE FB q E qvB v ...
... time. If the magnetic and electric forces are equal FE and opposite, the net force on the charged particle is zero resulting in the particle moving undeflected through the fields. The forces are balanced, FE FB q E qvB v ...
Magnetic Field Interactions
... Lets now exam the path for a negatively charged particle moving through the same uniform magnetic field. The right hand rule shows us the direction of the cross product is also down. However, the negative sign included with the negative charge would reverse the direction of the force applied t ...
... Lets now exam the path for a negatively charged particle moving through the same uniform magnetic field. The right hand rule shows us the direction of the cross product is also down. However, the negative sign included with the negative charge would reverse the direction of the force applied t ...
AP Physics Electricity and Magnetism Syllabus Unit 1: 6 weeks
... ii. identify locations where the field is strong and where it is weak iii. identify where positive or negative charges must be located to produce the given field pattern. c. Given two or more point charges, find the electric field at a given point in the vicinity of the charges. ...
... ii. identify locations where the field is strong and where it is weak iii. identify where positive or negative charges must be located to produce the given field pattern. c. Given two or more point charges, find the electric field at a given point in the vicinity of the charges. ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.