A lamp draws a current of 20 A when it is connected to a 100 V source? What is the resistance of the lamp?

Need in all of themmm only answer if you know pls

Which sound characteristic is not affected by the relative motion of an object

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) =_