For an ideal transformer power loss is assumed to be zero
i.e. the power in primary coil due to input voltage must be equal to power in secondary coil due to output voltage
this can be written in form of equation
![V_1 i_1 = V_2 i_2](https://tex.z-dn.net/?f=V_1%20i_1%20%3D%20V_2%20i_2)
here we know that
![V_2 = 140 volts](https://tex.z-dn.net/?f=V_2%20%3D%20140%20volts)
![i_2 = 3.5 A](https://tex.z-dn.net/?f=i_2%20%3D%203.5%20A)
![i_1 = 10 A{/tex]now we will use above equation[tex]140*3.5 = 10 * V_1](https://tex.z-dn.net/?f=i_1%20%3D%2010%20A%7B%2Ftex%5D%3C%2Fp%3E%3Cp%3Enow%20we%20will%20use%20above%20equation%3C%2Fp%3E%3Cp%3E%5Btex%5D140%2A3.5%20%3D%2010%20%2A%20V_1)
![V_1 = 49 volts](https://tex.z-dn.net/?f=V_1%20%3D%2049%20volts)
So primary coil voltage is 49 Volts
Answer:
![1.475\times 10^{-13}\ C/m^3](https://tex.z-dn.net/?f=1.475%5Ctimes%2010%5E%7B-13%7D%5C%20C%2Fm%5E3)
Explanation:
= Permittivity of free space = ![8.85\times 10^{-12}\ F/m](https://tex.z-dn.net/?f=8.85%5Ctimes%2010%5E%7B-12%7D%5C%20F%2Fm)
A = Area
h = Altitude = 600 m
Electric flux through the top would be
(negative as the electric field is going into the volume)
At the bottom
![120A](https://tex.z-dn.net/?f=120A)
Total flux through the volume
![\phi=120-110\\\Rightarrow \phi=10A](https://tex.z-dn.net/?f=%5Cphi%3D120-110%5C%5C%5CRightarrow%20%5Cphi%3D10A)
Electric flux is given by
![\phi=\dfrac{q}{\epsilon_0}\\\Rightarrow q=\phi\epsilon_0\\\Rightarrow q=10A\epsilon_0](https://tex.z-dn.net/?f=%5Cphi%3D%5Cdfrac%7Bq%7D%7B%5Cepsilon_0%7D%5C%5C%5CRightarrow%20q%3D%5Cphi%5Cepsilon_0%5C%5C%5CRightarrow%20q%3D10A%5Cepsilon_0)
Charge per volume is given by
![\rho=\dfrac{q}{v}\\\Rightarrow \rho=\dfrac{10A\epsilon_0}{Ah}\\\Rightarrow \rho=dfrac{10\epsilon_0}{h}\\\Rightarrow \rho=\dfrac{10\times 8.85\times 10^{-12}}{600}\\\Rightarrow \rho=1.475\times 10^{-13}\ C/m^3](https://tex.z-dn.net/?f=%5Crho%3D%5Cdfrac%7Bq%7D%7Bv%7D%5C%5C%5CRightarrow%20%5Crho%3D%5Cdfrac%7B10A%5Cepsilon_0%7D%7BAh%7D%5C%5C%5CRightarrow%20%5Crho%3Ddfrac%7B10%5Cepsilon_0%7D%7Bh%7D%5C%5C%5CRightarrow%20%5Crho%3D%5Cdfrac%7B10%5Ctimes%208.85%5Ctimes%2010%5E%7B-12%7D%7D%7B600%7D%5C%5C%5CRightarrow%20%5Crho%3D1.475%5Ctimes%2010%5E%7B-13%7D%5C%20C%2Fm%5E3)
The volume charge density is ![1.475\times 10^{-13}\ C/m^3](https://tex.z-dn.net/?f=1.475%5Ctimes%2010%5E%7B-13%7D%5C%20C%2Fm%5E3)
40 seconds I’m pretty sure sorry if I’m wrong
Answer:
c. 60 feet is the correct answer
Explanation:
what is the contour interval of this map? a.20 b.-20 c. 60 feet 11
Answer:
speed = distance/time
Explanation:
speed = 150/30
speed =5m/s
you were running fast .....5m/s is a good speed