Recent content by mmoadi

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...

Thank you for reviewing and all the help!:smile:

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...

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...

: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...

:smile:Well, at least I cracked one problem!:biggrin: Thank you for your help and HAPPY NEW YEAR:wink:!

Thank you for helping, I will just have to do additional :smile:calculating!

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...

Thank you for helping! Second part: What is the strength of electric field to the left and to the right of each plate? I need some help with this part. Any hints? Third part: What is the force on the surface unit between the two plates? E= ½ Q*V → Q= 2E/ V Q= 200 C F= Q*E= 200 N Fourth...

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...