Which of the following is one of the main functions of a transistor in a circuit? A. To store charges on conductive plates in a circuit
B. To act as a switch to control the flow of charge in a circuit
C. To heat up by opposing the flow of charge through the circuit
D. To force positive charge to move against it's natural tendency​

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?