what happens to the current in a circuit if the voltage applied is quadrupled and the resistance is cut in half?

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?