You and your friend Hodges are conducting an experiment with light. Hodges points a light source at you and you measure the peak magnetic field value as B = 3.8 µT. (a) What is the maximum magnitude of the electric field? |V/m (b) What is the maximum intensity of the light source? |W/m2 (c) What is the average intensity of the light source? W/m2
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- Considerable scientific work is currently under way to determine whether weak oscillating magnetic fields such as those found near outdoor electric power lines can affect human health. One study indicated that a magnetic field of magnitude 1.40 x 10-³ T, oscillating at 60 Hz, might stimulate red blood cells to become cancerous. If the diameter of a red blood cell is 7.6 μm, determine the maximum emf that can be generated around the perimeter of the cell. VThe induced magnetic field at radial distance 7.6 mm from the central axis of a circular parallel-plate capacitor is 2.2 x 107 T. The plates have radius 2.3 mm. At what rate is the magnitude of the electric field between the plates changing? Number i UnitsHo Idlxf 4π 72 dB This problem checks your understanding of the term in the equation for the magnetic field due to a small "piece" of current, Consider a small piece of current (perhaps there's a wire) at location $ whose coordinates are (6 m, 2 m, 10 m). We would like to find the magnetic field at location P whose coordinates are (2 m, 5 m, 2 m). The term " is the distance between point S and point P. What is its value, in meters?
- A 0.220–A current is charging a capacitor that has circular plates 10.1 cm in radius. The plate separation is 4.00 mm. (a) What is the time rate of increase of electric field between the plates? V/(m·s)(b) What is the magnetic field between the plates 5.00 cm from the center? TOn its highest power setting, a certain microwave oven projects 1.00 kW of microwaves onto a 30.0 by 40.0 cm area. What is the peak magnetic fieldstrength B0 ?The induced magnetic field at radial distance 5.8 mm from the central axis of a circular parallel-plate capacitor is 1.8 × 10-8 T. The plates have radius 4.0 mm. At what rate is the magnitude of the electric field between the plates changing? Number i Units
- AM Mon Nov 7 bconline.broward.edu b) 2.1 nT c) 1.6 nT d) 3.1 nT e) 3.6 nT 48 6. The electric field amplitude of the signal at that point is 0.780 V/m. What is the amplitude of the magnetic field of the signal at that point? a) 2.6 T 67% 1What is the displacement current density? a) The current density due to the motion of charges in a conductor. b) The current density due to the motion of charges in a dielectric. c) The current density that arises from time-varying electric fields in free space. d) The current density that arises from the magnetic fields produced by moving charges. In what form can Ampere-Maxwell's equation be written in the absence of a time-varying electric field? a) V. E = p/ɛo b) VxE=-ƏB/ət c) V x H = J d) VB=0 What does the integral form of Ampere-Maxwell's equation relate to? a) The electric field generated by a time-varying magnetic field. b) The magnetic field generated by a time-varying electric field. c) The relationship between the current density and the magnetic field. d) The behavior of electromagnetic waves in free space. e) None In the integral form of Ampere-Maxwell's equation, what does the surface integral of the displacement current density represent? a) The total charge enclosed by…