What is the purpose of a switch?

What is an electric motor? Give name of its different parts and also explain their functions.

What is the current through the battery when the switch is open? 20 Ω 40 2 10 V 60 2 10 2

What is the role of the split ring in an electric motor?

In the figure particles 2 and 4, of charge -e, are fixed in place on a y axis, at y₂ = -9.62 cm and y4 = 4.81 cm. Particles 1 and 3, of charge - e, can be moved along the x axis. Particle 5, of charge +e, is fixed at the origin. Initially particle 1 is at x₁ = -9.62 cm and particle 3 is at x3 = 9.62 cm. (a) To what x value must particle 1 be moved to rotate the direction of the net electric force net on particle 5 by 30* counterclockwise? (b) With particle 1 fixed at its new position, to what x value must you move particle 3 to rotate back to its original direction? (a) Number (b) Number tel tel i Units Units < <

20