isc paper–2011 - auroraclasses.org
... Obtain an expression for refraction at a single convex spherical surface, i.e. the relation between 1 (rarer medium), 2 (denser medium), the object distance u, image distance v and radius of curvature R. ...
... Obtain an expression for refraction at a single convex spherical surface, i.e. the relation between 1 (rarer medium), 2 (denser medium), the object distance u, image distance v and radius of curvature R. ...
MAGNETISM MAGNETISM
... current source. Instead, a current is induced in them by the magnetic field of the stator, and this induced current creates the inner magnetic field that attempts to align itself with the stronger outside magnetic field. This force is what turns the rotor. ...
... current source. Instead, a current is induced in them by the magnetic field of the stator, and this induced current creates the inner magnetic field that attempts to align itself with the stronger outside magnetic field. This force is what turns the rotor. ...
Deerfield High School / Homepage
... electricity and current electricity? Static electricity is stationary or collects on the surface of an object, whereas current electricity is flowing very rapidly through a conductor. The flow of electricity in current electricity has electrical pressure or voltage. Electric charges flow from an are ...
... electricity and current electricity? Static electricity is stationary or collects on the surface of an object, whereas current electricity is flowing very rapidly through a conductor. The flow of electricity in current electricity has electrical pressure or voltage. Electric charges flow from an are ...
Electricity and Magnetism
... electricity and current electricity? Static electricity is stationary or collects on the surface of an object, whereas current electricity is flowing very rapidly through a conductor. The flow of electricity in current electricity has electrical pressure or voltage. Electric charges flow from an are ...
... electricity and current electricity? Static electricity is stationary or collects on the surface of an object, whereas current electricity is flowing very rapidly through a conductor. The flow of electricity in current electricity has electrical pressure or voltage. Electric charges flow from an are ...
Steady state
... needed to produce an electric current. 3) For a steady current to flow in a wire, the wire must be part of a closed circuit. 4) The electric field is constant along all parts of the circuit when a steady current is flowing. 5) The electric current in a wire is proportional to the drift velocity of t ...
... needed to produce an electric current. 3) For a steady current to flow in a wire, the wire must be part of a closed circuit. 4) The electric field is constant along all parts of the circuit when a steady current is flowing. 5) The electric current in a wire is proportional to the drift velocity of t ...
L15 Electromagnetic induction and inductance
... the torque is constant, why doesn’t the loop get faster and faster? The rotating loop produces an induced EMF which opposes the original current, and the torque is reduced (a back EMF). So we get a balance between work done and energy dissipated in the circuit. Example: R = 100 ...
... the torque is constant, why doesn’t the loop get faster and faster? The rotating loop produces an induced EMF which opposes the original current, and the torque is reduced (a back EMF). So we get a balance between work done and energy dissipated in the circuit. Example: R = 100 ...
PHYS2424 - SPRING 2000
... statements best describes the voltage across the resistor as measured by the DC voltmeter immediately after the switch is closed? ...
... statements best describes the voltage across the resistor as measured by the DC voltmeter immediately after the switch is closed? ...
Faraday`s Law - Rutgers Physics
... You may notice that the wires touch the brushes only part of the time – around the time when the armature is approximately vertical. It is very important to note that when the armature has rotated 180 degrees from its initial vertical orientation, the armature current (and hence the magnetic field) ...
... You may notice that the wires touch the brushes only part of the time – around the time when the armature is approximately vertical. It is very important to note that when the armature has rotated 180 degrees from its initial vertical orientation, the armature current (and hence the magnetic field) ...
Power point on Magnetism - EMS Secondary Department
... • Example: Steel, stainless steel, invar. • Most ferrous materials are magnetic. ...
... • Example: Steel, stainless steel, invar. • Most ferrous materials are magnetic. ...
Galvanometer
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.Galvanometers were the first instruments used to detect and measure electric currents. Sensitive galvanometers were used to detect signals from long submarine cables, and to discover the electrical activity of the heart and brain. Some galvanometers use a solid pointer on a scale to show measurements; other very sensitive types use a miniature mirror and a beam of light to provide mechanical amplification of low-level signals. Initially a laboratory instrument relying on the Earth's own magnetic field to provide restoring force for the pointer, galvanometers were developed into compact, rugged, sensitive portable instruments essential to the development of electrotechnology. A type of galvanometer that records measurements permanently is the chart recorder. The term has expanded to include use of the same mechanism in recording, positioning, and servomechanism equipment.