Charge is moving through a wire. An amount of charge Q moves past a particular s
ID: 1319157 • Letter: C
Question
Charge is moving through a wire. An amount of charge Q moves past a particular spot in the wire in an amount of time t to produce a current I.
What happens to the magnitude of the current when it takes five times as long for the same amount of charge is moved past that point in the wire at a steady rate?
What happens to the magnitude of the current when the amount of time to move the charge doesn't change, but the amount of charged moved past that point in the wire at a steady rate is four times as much.
Explanation / Answer
Iold = dq/dt
Inew = dq/5dt = Iold/5
new current Inew is Iold/5 <-----answer
------------------------
Inew = 4dq/dt = 4*Inew
new current Inew ia 4Iold <-----answer