An inductor:-
(a.) Passes direct current and opposes time varying current.
As per Maxwell's first and second equations, an electromagnetic wave:-
(a.) must have electric and magnetic fields perpendicular to the direction of propagation.
An inductor a. passes direct current and opposes time varying current. b. passes time varying current...
An inductor a. passes current whether it is time varying or direct. b. passes direct current and opposes time varying current. c. passes time varying current and stops direct current. d. expels magnetic field through it. e. rotates if current is passed through it. f. allows only magnetic field to go through it and stops any current through the coil.
Per Maxwell’s first and second equations, an electromagnetic wave a. has magnetic flux constant. b. has, in fact, no electric and magntetic fields. c. has electric field perpendicular to the direction of propagation and magnetic field randomly oriented. d. must be longitudinal. e. must have electric and magnetic fields parallel to the direction fo propagation. f. must have electric and magnetic fields perpendicular to the direction of propagation.
1. A loop of wire passes through a constant magnetic field going out of the page. As the loop begins to enter the magnetic field what direction will the current be induced? Counter clockwise Into the page Out of the page In a zig zag around the earth Clockwise 2. Faraday’s low of induction states that the emf induced in a loop of wire is proportional to (magnetic flux)/(time) (time)/(magnetic flux) (magnetic flux)(magnetic field) (current)/(time) (magnetic flux)(area) 3. The number...
A circular coil of radius 0.58 m is placed in a time-varying magnetic field B(t) = (6.40 ✕ 10−4) sin[(44.0 ✕ 102 rad/s) t] where B is in teslas. The magnetic field is perpendicular to the plane of the coil. Find the magnitude of the induced electric field in the coil at t = 0.001 s and t = 0.01 s. |E(t = 0.001) | = V/m |E(t = 0.01)| =
At a particular moment in time and space, we measure an electromagnetic wave's electric and magnetic fields. We find the electric field →E pointing Up and the magnetic field →B pointing West. What is the direction of wave propagation? West, Up, North, South, or East?
Magnetism 1. (4) An unknown particle travelling at a velocity of 2.20x106 m/s to the right as seen by an observer, enters a region that has an electric field of magnitude 750 V/m pointed away from the observer. Ignore gravity for this question. (a) What is the direction and magnitude of the perpendicular magnetic field which would best cancel out the effect of the electric field so that the particle passes through undeflected? (b) If while travelling 0.200 m, with...
4. (20 points) A long straight wire carrying an alternating current / () is shown in the figure There is a paralel plate capacitor placed in the wire. a) Sketch the electric field directions in the empty space between the capacitor plates b) Sketch the magnetic field directions outside, around the capacitor plates. c The electric field outside the capacitor plates is in the same directions as in the space between the plates. Electromagnetic waves propagate in directions perpendicular to...
Tipler6 28.P.035. A current integrator measures the current as a function of time and integrates (adds) the current to find the total charge passing through it. (Because I = dq/dt, the integrator calculates the integral of the current or Q = ∫ I dt.) A circular coil that has 300 turns and a radius equal to 4.50 cm is connected to such an instrument. The total resistance of the circuit is 20.0 Ω The plane of the coil is originally...
21. Concept 26-7 gives the magnetic torque on a current loop with a single turn of wire. To achieve higher torques suitable for practical applications, motors use coils of wire with several turns. What is the maximum torque on a coil with 100 turns, area 9.0 × 10-4 m2, and current 2.0 A in the presence of a magnetic field of magnitude 0.2 T? Express your answer in N·m. . 24. Mass spectrometers select particles of a particular velocity using perpendicular...
An Electromagnetic Wave A sinusoidal electromagnetic wave of frequency 43.0 MHz travels in free space in the x-direction as in the figure. At some instant, a plane electromagnetic wave moving in the x direction has a maximum electric field of 725 N/C in the positive y direction. (a) Determine the wavelength and period of the wave. SOLUTION plane. Conceptualize Imagine the wave in the figure moving to the right along the x-axis, with the electric and magnetic fields oscillating in...