If the current in a wire of a CD player is 1.10
mA, how long would it take for 3.40 C of
charge to pass a point in this wire?
charge = current in amps * time in seconds
r5
To find the time it would take for a certain amount of charge to pass a point in a wire, you can use the formula:
Time = Charge / Current
In this case, the charge is given as 3.40 C (coulombs) and the current is given as 1.10 mA (milliamperes). However, it's important to note that the current needs to be converted to Amperes (A) in order to be consistent with the unit of charge (Coulombs).
1 mA = 0.001 A
Converting the current in the wire:
1.10 mA = 1.10 x 0.001 A = 0.0011 A
Now we can substitute the values into the formula:
Time = 3.40 C / 0.0011 A
Calculating the result:
Time ≈ 3090.91 seconds
So, it would take approximately 3090.91 seconds for 3.40 C of charge to pass a point in the wire.