When a 5 amperes current passing through a metallic rod residing along positive y-axis. What is the magnetic force per unit
length on rod with its direction, If a continuous B=0.30 tesla is
operated along positive x-axis

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) =_

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.