First question (upper left): 1/Req = 1/12 + 1/24 = 1/8 Req = 8 ohms Voltage is equal through different resistors, and V1 = V2 = 24 V. Current varies through parallel resistors: I1 = V1/R1 = 24/12 = 2 A. I2 = 24/24 = 1 A.
Second question (middle left): V1 = V2 = 6 V (parallel circuits) I1 = 2 A, I2 = 1 A, IT = 2+1 = 3 A. R1 = V1/I1 = 6/2 = 3 ohms, R2 = 6/1 = 6 ohms, 1/Req = 1/2 + 1/1, Req = 2/3 ohms
Third question (bottom left): V1 = V2 = 12 V IT = 3 A, meaning Req = V/It = 12 V/3 A = 4 ohms 1/Req = 1/R1 + 1/R2, 1/4 = 1/12 + 1/R2, R2 = 6 ohms I1 = V/R1 = 1 A, I2 = V/R2 = 2 A
Fourth question (top right): 1/Req = 1/20 + 1/20, Req = 10 ohms IT = 4 A, so VT = IT(Req) = 4*10 = 40 V Parallel circuits, so V1 = V2 = VT = 40 V Since the resistors are identical, the current is split evenly between both: I1 = I2 = IT/2 = 2 A.
Fifth question (middle right): 1/Req = 1/5 + 1/20 + 1/4, Req = 2 ohms IT = VT/Req = 40 V/2 ohms = 20 A V1 = V2 = V3 = 40 V The current of 20 A will be divided proportionally according to the resistances of 5, 20, and 4, the factors will be 5/(5+20+4), 20/(5+20+4), and 4/(5+20+4), which are 5/29, 20/29, and 4/29. I1 = 20(5/29) = 100/29 A I2 = 20(20/29) = 400/29 A I3 = 20(4/29) = 80/29 A
Sixth question (bottom right): V2 = 30V is given, but since these are parallel circuits, V1 = VT = 30 V. Then I1 = V1/R1 = 30 V/10 ohms = 3 A. I2 = 30 V/15 ohms = 2 A. IT = 3 + 2 = 5 A 1/Req = 1/10 + 1/15, Req = 6 ohms
We can remove ions and water molecules because both of them have an electric field . So this will help in repelling or attractive the above mentioned particles. Water is polar so it has an electric field due to net dipole moment.
(This can be a way to think about it) Nicholas Mikolaj Kopernik,1473–1543 Polish astronomer who declared the now accepted theory that the Earth and the other planets move around the Sun aka the Copernican System.
In this system, only conservative forces act. Therefore, the mechanical energy, that is, the sum of the kinetic energy and the potential energy, remains constant. When the mass is at its maximum displacement from equilibrium, its potential energy is maximum, therefore, its kinetic energy is minimal, that is to say, that its instantaneous velocity at that point is zero.
