A long wire parallel to the x-axis carries
a current of 8.5A in the positive x-direction. If there is a unform magnetic field B= 1.65T find the
force per unit length on the wires​

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_