FREQUENCY AND PERIOD

The relationship between frequency and periodic time and how to calculate frequency if you know the period and vice-versa.

[@natev7381]

Thanks Craig. You explain this a lot better than my teacher at school.

[@Kate.4.4]

Thank u sir ❤

[@Conceitedlad]

C'mon y'all subscribe to this guy... Great work!!

[@Fomwats]

Thank you for this! Great explanation.

[@mitchelllague5499]

You might want to invest in a better camera. The whole video is super blurry

[@user-xm5kk7rv3v]

Thanks again

[@md.ashadulhoqueasad2431]

Thank you so much sir.

[@badriyacabdiqani6248]

Teacher can i do aquestion

[@nayrbsworld3048]

❤

[@silindiledayi3495]

Why on the t side 4 becomes 40 how 🤔?

[@craigsclass-level3electric53]

Thanks for watching the video. Unfortunately you appear to be mixing up two separate examples, example 2 on the left has nothing to do with example 2 on the right. Good luck with your studies.

[@indi6936]

2:20 what do you do when the time isn’t given???

[@craigsclass-level3electric53]

I'm puzzled by your question, I probably need more information, but as there are only 2 variables, frequency and time - you must be given one or the other unless it is a "bigger question" requiring wider info or other formulae. It sounds like you may need to find frequency first? I'll try a couple of possibilities: 1. Do you have a circuit you can take measurements from using instruments? If so, use an oscilloscope to display the waveform. On the screen use the graticule (the grid) together with the time per division on the X axis control - from this you can find the time taken to complete 1 cycle and then use f=1/T to find frequency. NOTE IF YOU ARE USING A HIGH VOLTAGE YOU MUST PROCEED WITH CAUTION SO AS TO AVOID A SERIOUS ELECTRIC SHOCK. Hopefully you have a lecturer/supervisor available to assist you! 2. If this is part of a larger calculation using another formula then you may need to do transposition - I'll briefly try to explain. Suppose you are using XL = 2pifL, assuming you're given (or can find) reactance and inductance then you can transpose to give f = XL/(2PIL). From f you can get the periodic time, T. I hope this is of some help to you. I have recently retired so don't tend to answer many questions. I wish you well in your studies, good luck 👍