00:01
This question deals with the definition of current.
00:08
Current is defined as the rate of charge flow.
00:13
So we could define it like this.
00:15
We could say it is the amount of charge that is transferred, call that delta q, divided by the time it takes for that much charge to be transferred.
00:29
So, solving for the amount of charge, we could say that the current times delta t should equal the amount of charge that is transferred.
00:45
Now, it says in this problem that the current is possibly as high as 25 ,000 amps.
00:53
So taking that as our value for the current, we say 25 ,000 amps, and amps is a coulomb per second, times a time interval of 40 microseconds.
01:09
So 40 microseconds is 40 times 10 to the minus 6 seconds...