Electricity and Magnetism Answers

two points charges of +3.0uc and -7.00 uc are palced at x=0 and x+0.20 m. what is the magnitude of the electric field

[img]https://upload.cc/i1/2020/04/13/7FMQKT.jpg[/img]


question is in photo

R=4

[img]https://upload.cc/i1/2020/04/13/smpaLD.jpg[/img]




question in photo , R=4

A circular ring with a radius of 12.00 cm is in a uniform magnetic field of 6.50 x 103 Tesla which points in the positive y direction. calculate the flux where the normal vector to the surface of the ring is:

Calculate the magnitudes of manetic intensity H and the magnetic field B at the centre of a
15oo - turn solenoid which is 0.22m long and carries a current of 1.5A (UO= 4×3.14×10¯7Hm¯¹

27.3 The interior of a three-way incandescent lightbulb, which provides three levels of light intensity. The socket of the lamp is equipped with a four-position switch for selecting different light intensities, with the positions described as follows;(1) off (switches S1 and S2 closed both open),(2) switch S1 closed,(3) switch S2 closed, and (4) switches S1 and S2 both closed. The lightbulb contains two filaments. When the lamp is connected to a 120-V source, one filament receives 100 W of power and the other receives 75 W. What is the total power input to the light bulb when (a) only switch S1 is closed, (b) only swith S2 is closed, and (c) both switches are closed? (d) What if? suppose the 75-W filament breaks and no longer is able to carry a current. How many switch positions will result in light leaving the bulb and what will be the power input to the bulb in those positions?

In a electricle sell comparison of eletromotive froce is 1.5voltand internai resistance is 2 ohm.with in this sell 1 ohm,2 ohm,10 ohm resistance is connect in series combination.s what will be potential different and lost volt?

Calculate the quantum of energy in (a) yellow light wavelength 6×10^_7 m (b) X rays of wavelength 5×10^10m

Two point charges are located on the y-axis as follows: charge q1 = - 1.50 nC at y = - 0.600 m, and charge q2 = +3.20 nC at the origin (y = 0). What is the total force (magnitude and direction) exerted by these two charges on a third charge q3 = +5.00 nC located at y = -0.400 m?

An incident plane electromagnetic wave with frequency ω, wavenumber kI = kIz-hat, and (real) amplitude E0I travels through a vacuum and strikes a dielectric material (with index of refraction n) at normal incidence. The amplitude of the reflected wave is measured to be E0R = (1/2)E0I

Find the index of refraction n.
Find the wavelength of the transmitted wave, λT
Explain (in detail) why the incident and reflected waves have the same wavelength, λI = λR. Write down any equations that support your response.