Ahall probe serves to measure magnetic field strength. such a probe consists of a poor conductor 0.103 mm thick, whose charge-carrier density is 1.11 × 1025 m–3. when a 2.89-a current flows through the probe, the hall voltage is measured to be 3.47 mv. what is the magnetic field strength?

magnetic field strength is 0.315852 T

Explanation:

Given data

thick = 0.103 mm = 0.103 × 10^-3 m

charge-carrier density = 1.11 × 10^25 m^–3

hall voltage = 3.47 mV = 4.99 × 10^-3 V

current = 2.89 A

to find out

magnetic field strength

solution

we will apply here magnetic field strength formula i.e

magnetic field strength = hall voltage × charge-carrier density × magnitude of charge electron ×  thick  / current

here put all these value and magnitude of charge electron is 1.6×10^-19 C

magnetic field strength = hall voltage × charge-carrier density × magnitude of charge electron ×  thick  / current

magnetic field strength = 4.99 × 10^-3 ×  1.11 × 10^25 × 1.6×10^-19 × 0.103 × 10^-3  /  2.89

magnetic field strength = 0.912811 / 2.89

magnetic field strength is 0.315852 T

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !