Calculate the electrical energy expended in a device across which the circuit voltage drops by 20.0 volts in moving a charge of 4 coulombs.
A)5 J
B)80 J
C)0.2 J

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

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?

Which of the following are guidelines to follow for obtaining accurate observations