We were taught about single phase series circuits today and I had a bit of a problem understand this little thing. Let's look at this case
1) purely capacitive circuit
It's said that current leads the voltage by an angle of 90°. So at t= 0 voltage is zero, but current is non zero. I cannot imagine this happening - it's wierd.
2) purely inductive circuit
Voltage leads the current by an angle of 90°, so there's a small period of time where there's no current inspite of a potential difference. And the current comes up only when the voltage is at wt = 90°. Again, I wonder how this is possible.