Homework Statement
Through the bigger coil with N = 10,000 turns of wire and length of L = 30 cm is flowing electric current of I = 5 A. Inside the big coil we insert a smaller coil with
N(1) = 500 turns, length of L(1) = 3 cm, and a radius r = 1 cm. The electric current flowing through the...
Homework Statement
Electricity from the power plant with a power P = 100MW is transmitted by V= 220kV line. At what distance from the wire is the density of the magnetic field equal to the density of the Earth's magnetic field B(earth) = 4 × 10^-5 T? What is the force on the L= 200 m long...
OK, I rewrote my equations and recalculated and this are my new results:
R(0)= 1 Ω
V(0)= 3 V
Are my calculations correct?
Thank you for helping!:smile:
Homework Statement
What current flows through the resistors R(1) = 1Ω, R(2) = 2 Ω and R(3) = 3 Ω, if the driving voltages are V(1) = 1V and V(2) = 2V?
Picture:
http://item.slide.com/r/1/151/i/lvtwIwH-0j8A8o-XAKDtPRQO1eHAb4Ik/
Homework Equations
V= RI → I= V/ R
The Attempt at a...
Homework Statement
We connect two resistors to a battery, once with the resistor of the resistance R1 = 2 Ω, and the second time the resistor of the resistance R2 = 0.5 Ω. In both cases the resistor uses up the power of 2W. What is the internal resistance of the battery? What is the driving...
Homework Statement
What current flows through the resistors R(1) = 1Ω, R(2) = 2 Ω and R(3) = 3 Ω, if the driving voltages are V(1) = 1V and V(2) = 2V?
Picture:
http://item.slide.com/r/1/151/i/lvtwIwH-0j8A8o-XAKDtPRQO1eHAb4Ik/
Homework Equations
V= RI → I= V/ R
The Attempt at a...
:biggrin:RECALCULATION:
F= m*a
E= U/d
W= ΔKE
- First I solved for vector velocity in the w-direction:
W= F*d= q*U
W= KE’ – KE0 ≈ 0
q*U= m*v(x)²/ 2
v(x)²= 2q*U/ m
v(x)= sqrt[2q*U/ m]
- Now I solved for acceleration in the y-direction:
a(y)= F(y)/ m
F(y)= E(y)*q
F(y)= (U’/d)*q
a(y)= (U’*q)/...
Homework Statement
Electrons, which evaporated from the filament accelerated in homogeneous electric field that was created by using two parallel metal plates, connected to the voltage
V = 1 kV. The resulting stream of electrons is deviated from the initial direction for a
φ = 15 ° in...
Homework Statement
Constant for the diffusion of hydrogen through steel is D(steal) = 4 x 10^5 cm²/s. They try to improve steel tanks for hydrogen storage by applying the coating based on TiAlN alloys. What is the diffusion coefficient Dp of such coating, if the permeability of hydrogen is...
Homework Statement
Flat capacitor with a plates distanced d = 2 cm and the area A= 1 dm² are connected to a voltage U = 100 V. We disconnect the source of voltage and we increase the distance between the plates to twice the distance. How much work is done?
Homework Equations
C= ε*A/ d...
Homework Statement
- How much is the electrical voltage U between two evenly electrified parallel flat plates, distanced d = 1 cm, if the strength of electric field between them is E = 1 V / m?
- What is the strength of electric field to the left and to the right of each plate?
- What is...