Faraday`s Law
... • From this expression, we see that an emf can be induced in the circuit in several ways: • The magnitude of B can change with time. • The area enclosed by the loop can change with time. The angle θ between B and the normal to the loop can change with time. • Any combination of the above can occur. ...
... • From this expression, we see that an emf can be induced in the circuit in several ways: • The magnitude of B can change with time. • The area enclosed by the loop can change with time. The angle θ between B and the normal to the loop can change with time. • Any combination of the above can occur. ...
Question Bank Physics Class 12
... Q3. What is the effective resistance of ammeter if a shunt resistance S is used across the terminals of the galvanometer of resistance G? Q4. Which physical quantity has the unit Wb/m2? Is it a scalar or a vector quantity? Q5. If magnetic dipole is along the direction of magnetic field. What is the ...
... Q3. What is the effective resistance of ammeter if a shunt resistance S is used across the terminals of the galvanometer of resistance G? Q4. Which physical quantity has the unit Wb/m2? Is it a scalar or a vector quantity? Q5. If magnetic dipole is along the direction of magnetic field. What is the ...
Lab 1: Electric Potential and Electric Field
... 1. The relationships between field lines and contour lines are outlined below. You don't need to know any calculus to use these rules, but they are all derived from the mathematical relationship between the electric field and V. 2. Electric field lines... a. Begin on + and end on - charges b. Do not ...
... 1. The relationships between field lines and contour lines are outlined below. You don't need to know any calculus to use these rules, but they are all derived from the mathematical relationship between the electric field and V. 2. Electric field lines... a. Begin on + and end on - charges b. Do not ...
Chapter 21 The Electric Field I: Discrete Charge Distributions
... A popular classroom demonstration consists of rubbing a plastic rod with fur to give the rod charge, and then placing the rod near an empty soda can that is on its side (Figure 21-36). Explain why the can will roll toward the rod. Determine the Concept Because the can is grounded, the presence of th ...
... A popular classroom demonstration consists of rubbing a plastic rod with fur to give the rod charge, and then placing the rod near an empty soda can that is on its side (Figure 21-36). Explain why the can will roll toward the rod. Determine the Concept Because the can is grounded, the presence of th ...
Chapter 34
... food and distribute the energy. If a microwave oven intended for use with a turntable is instead used with a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as carrot strips or cheese. The separation distance between the burns is measured to be 6 cm 5%. From ...
... food and distribute the energy. If a microwave oven intended for use with a turntable is instead used with a cooking dish in a fixed position, the antinodes can appear as burn marks on foods such as carrot strips or cheese. The separation distance between the burns is measured to be 6 cm 5%. From ...
Magnetic Force on a current Element
... Had we instead been seeking F21, the magnetic force acting on line 1 from the field of line 2, we would have found F21 = -F12. Conclusion: 1) Two parallel lines with current in opposite directions experience a force of repulsion. 2) For a pair of parallel lines with current in the same direction, a ...
... Had we instead been seeking F21, the magnetic force acting on line 1 from the field of line 2, we would have found F21 = -F12. Conclusion: 1) Two parallel lines with current in opposite directions experience a force of repulsion. 2) For a pair of parallel lines with current in the same direction, a ...
What is a CCD
... Diode junction: the n-type layer contains an excess of electrons that diffuse into the p-layer. The player contains an excess of holes that diffuse into the n-layer (depletion region, region where majority charges are ‘depleted’ relative to their concentrations well away from the junction’). The dif ...
... Diode junction: the n-type layer contains an excess of electrons that diffuse into the p-layer. The player contains an excess of holes that diffuse into the n-layer (depletion region, region where majority charges are ‘depleted’ relative to their concentrations well away from the junction’). The dif ...
Electrostatics
Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges with no acceleration.Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον electron, was the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law.Even though electrostatically induced forces seem to be rather weak, the electrostatic force between e.g. an electron and a proton, that together make up a hydrogen atom, is about 36 orders of magnitude stronger than the gravitational force acting between them.There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to your hand after you remove it from a package, and the attraction of paper to a charged scale, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and the operation of photocopiers. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever any two surfaces contact and separate, the effects of charge exchange are usually only noticed when at least one of the surfaces has a high resistance to electrical flow. This is because the charges that transfer to or from the highly resistive surface are more or less trapped there for a long enough time for their effects to be observed. These charges then remain on the object until they either bleed off to ground or are quickly neutralized by a discharge: e.g., the familiar phenomenon of a static 'shock' is caused by the neutralization of charge built up in the body from contact with insulated surfaces.