Q2 = A magnetic field strength of 10 uA/m is required at a point on 0 = n/2, 5 km from an antenna in air. Neglecting ohmic loss, how much power must the antenna transmit if it is (a) A Hertzian dipole of length A/25? (b) A half-wave dipole? (c) A quarter-wave monopole? (d) A 10-turn loop antenna of radius p, = 1/20? %3D
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A: Voltage, V = 750 V radius, r = 0.27 m
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A: Given: frequency f=110 MHz speed of EM wave=c=3(108) ms-1 peak electric field E0=200 Vm-1
Q: Cosmic microwave background radiation fills space with anaverage energy density of about 4 x 10-14…
A: (a) Average energy density = 12 ε∘ Emax2 ⇒ 4× 10-14 = 12ε∘ E2max⇒Emax = 8×10-148.85×10-12⇒Emax…
Q: 20 Volts, 4 Farads, 30 Ohms V(t) was shown Question1 Find the charging current when time = 2 time…
A: Given : V=20V, R=30Ω, C=4F 1) The charging current at t=2τ is : I=I0e-tτ=VRe-2ττI=2030×e-2I=0.1A
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A: The frequency,
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A: Note: As per Bartleby guidelines, only first question will be answered please upload other questions…
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Q: A Hall effect experiment is performed on a n type semiconductor bar whose dimensions are: 2.9 mm…
A: Electric field E=15 V/m in x-direction, carrier concentration n=9.54*1014 /cm3=9.4*1023 /m3, Current…
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A: Given:Electric breakdown of dry air happens at, Eo = 3.00 MV/m = 3.00×106 V/mdiameter of the…
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A: Given Data: Power (P) = 32.0 kW = 32.0×103 W.Distance (r) = 28 km = 28×103 m. To Determine: The…
Q: When a powerful laser is employed in the Earth's atmosphere, the accompanying electric field may…
A: CONCEPT:
Q: 1%) Problem 3: Consider an electromagnetic wave with a maximum magnetic field strength of 2.5 x 10*…
A: Given, Maximum magnetic field is B=2.5×10-4T
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A: Part-(a) Given data: The speed of the electrons travelling to the west is V=4.8x106 m/s. The…
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A: Given Data, Wavelength of MIR wave (λM)=4.5 μm Wavelength of keV rays (λk)=8.9 pm Wavelength of the…
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A: Let I be the current, R be the radius of the circular plate capacitor, and d be the plate’s…
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A: A) Write the expression for the current density and substitute the corresponding values.…
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A: Assuming ideal capacitor with a homogeneous electric field E between the plates and no electric…
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A: Data distance,d=7.2cm Electric field, E=2.8×10^6 V/m*s To find Id
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- = (a) A velocity selector consists of electric and magnetic fields described by the expressions E = EK and B = Bĵ, with B kV/m) such that a 720 eV electron moving in the negative x-direction is undeflected. kV/m (b) What If? For the value of E found in part (a), what would the kinetic energy of a proton have to be (in MeV) for it to move undeflected in the negative x-direction? Need Help? MeV Read It 23.0 mT. Find the value of E (in Watch ItIn a certain experiment, a radio transmitter emits sinusoidal electromagnetic waves of frequency 110.0 MHz in opposite directions inside a narrow cavity with reflectors at both ends, causing a standingwave pattern to occur. (a) How far apart are the nodal planes of the magnetic field? (b) If the standing-wave pattern is determined to be in its eighth harmonic, how long is the cavity?An electron entering Thomson’s e/m apparatus has an initial velocity (in horizontal direction only) of 4.0 x 106 m/s. In the lab is a permanent horseshoe magnet of strength 12 mT, which you would like to use. (a) What electric fi eld will you need in order to produce zero defl ection of the electrons as they travel through the apparatus? (b) The length of nonzero E and B fi elds is 2.0 cm. When the magnetic fi eld is turned off, but the same electric field remains, how far in the vertical direction will the electron beam be deflected over this length?magnetic fi eld is turned off, but the same electric fi eld remains, how far in the vertical direction will the electron beam be defl ected over this length
- Under what conditions might wires in a circuit where the current flows in only one direction emit electromagnetic waves (select all that apply)? When the current is switching between being on and steady and completely off When the current as a function of time is described by the function I(t) = 2 + sin(2t) %3D When the current is steadily increasing or decreasing When the current has any nonzero constant valueFind the expression for the electron's resonance frequency using F=ma equation, in which the polarization is P=-neî and the depolarization field would be E = - 4лР 3 4ne? (a) o 3m 4ле? (b) o 4лпе (c) o 3m (d) o ne? 2mFor conductors carrying high frequency electromagnetic waves, explain what is meant by the term skin depth. Q4 (a) (b) If the following second order differential equation describes the electric field dependence of the x-component of a plane electromagnetic wave of angular frequency, @, propagating in the z-direction in a metal of conductivity o and permeability u (here j= -1) d² E - = jouoE, dz? has a solution E, = E,e¯² then show that the skin depth is given by:- 2 An electromagnetic shield is made of stainless steel with a conductivity o =1.16×10°S /m and relative magnetic permeability u, = 500. For an electromagnetic wave at a frequency of 100 MHz, what thickness of stainless steel is required to obtain an electric field attenuation of -100 dB? (c) (d) Name two practical applications which utilise the concept of skin effect in conductors carrying high frequency signals.
- Calculate the following for an eloctromagnetic wave with a wave length of /\=2.73 x 10^-4m: a) Frequency, f= b) Period, T= c) Electromagnetic band type ( Xray, Radio, Ect.)Genesis gets accepted to a Dental School in Idaho and when she arrives,she cannot find good signål. To fix this problem,Genesis orders a 2m long antenna on Amazon, and ottaches it to her phone.If the antenna carries a 900 mC chorge, what will be the force (mognitude and direction) on a 5 MC that is 30 cm (0.3)away from its Center? You have to derive the equation for the Electric field.V4
- A plane electromagnetic wave of frequency 20 GHz moves in the positive y-axis direction such that its electric field is pointed along the z-axis. The amplitude of the electric field is 10 V/m. The start of time is chosen so thatat t = 0 , the electric field has a value 10 V/m at the origin. (a) Write the wave function that will describe the electric field wave. (b) Find the wave function that will describe the associated magnetic field wave.(a) Number i (b) Number Project Seafarer was an ambitious program to construct an enormous antenna, buried underground on a site about 10000 km² in area. Its purpose was to transmit signals to submarines while they were deeply submerged. If the effective wavelength were 1.6 × 103³ Earth radii, what would be the (a) frequency and (b) period of the radiation emitted? Ordinarily, electromagnetic radiations do not penetrate very far into conductors such as seawater. Take the Earth's radius to be 6370 km. Mi Units UnitsIn a nuclear experiment a photon with kinetic energy 6.0 MeV moves in a circular path in a uniform magnetic field. If the magnetic field is B= 1.7 T what is the radius of the orbit?