Maxwell`s equation
... point in space by currents J flowing along other curves in space. It has its experimental roots in Oersted’s great discovery that an electric current produces a magnetic field in the space around it. If another term is added to this equation, it follows that the magnetic field can be produced also i ...
... point in space by currents J flowing along other curves in space. It has its experimental roots in Oersted’s great discovery that an electric current produces a magnetic field in the space around it. If another term is added to this equation, it follows that the magnetic field can be produced also i ...
CSS - CBSE Guess
... Q.25> Describe the construction and working of a A.C. Generator. Q.26> Explain the construction and working of motor starter. Q.27> Using a labeled diagram, explain the construction and working of a transformer. Explain step-up and step-down, transformation ratio & efficiency. Name 4 kinds of energy ...
... Q.25> Describe the construction and working of a A.C. Generator. Q.26> Explain the construction and working of motor starter. Q.27> Using a labeled diagram, explain the construction and working of a transformer. Explain step-up and step-down, transformation ratio & efficiency. Name 4 kinds of energy ...
XI. Inductance - Worked Examples
... B = µ0 I / 2π r , using Ampere’s law. The total magnetic flux Φ B through the loop can be obtained by summing over contributions from all differential area elements dA =L dr: G G µ IL h + w dr µ 0 IL h + w ...
... B = µ0 I / 2π r , using Ampere’s law. The total magnetic flux Φ B through the loop can be obtained by summing over contributions from all differential area elements dA =L dr: G G µ IL h + w dr µ 0 IL h + w ...
9J. Higher Revision Questions.
... 1. North pole and South pole. 2. The space around a magnet where it can affect magnetic materials / other magnets. 3. Gravity 4. Earth 5. 5 × 10 N = 50 N 6. The current / voltage in the coil, or the same type of core in the electromagnet. Because it could also affect the strength of the electromagne ...
... 1. North pole and South pole. 2. The space around a magnet where it can affect magnetic materials / other magnets. 3. Gravity 4. Earth 5. 5 × 10 N = 50 N 6. The current / voltage in the coil, or the same type of core in the electromagnet. Because it could also affect the strength of the electromagne ...
Serway_PSE_quick_ch32
... Two circuits like the one shown in Figure 32.6 are identical except for the value of L. In circuit A the inductance of the inductor is LA, and in circuit B it is LB. Switch S is thrown to position a at t = 0. At t = 10 s, the switch is thrown to position b. The resulting time rates of change for th ...
... Two circuits like the one shown in Figure 32.6 are identical except for the value of L. In circuit A the inductance of the inductor is LA, and in circuit B it is LB. Switch S is thrown to position a at t = 0. At t = 10 s, the switch is thrown to position b. The resulting time rates of change for th ...
Unit 10C Magnetism
... Curve your fingers Place your thumb (which is presumably pretty straight) in direction of current. Curved fingers represent curve of magnetic field. Field vector at any point is tangent to field line. ...
... Curve your fingers Place your thumb (which is presumably pretty straight) in direction of current. Curved fingers represent curve of magnetic field. Field vector at any point is tangent to field line. ...
Study Guide for Science Quiz on the Solar System
... In a series circuit, electric current goes through each device in the circuit in one sequential, complete path from the source of the current. If one light bulb in a series goes out, all the other light bulbs in the circuit go out too because the circuit is no longer complete. ...
... In a series circuit, electric current goes through each device in the circuit in one sequential, complete path from the source of the current. If one light bulb in a series goes out, all the other light bulbs in the circuit go out too because the circuit is no longer complete. ...
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.