A step-up transformer has primary coil with 15 turns. How many turns would be required in the secondary coil to increase the voltage from 60 v to 160 v? 15 x=160/80
x=80/15
x=?
where did the 80 come from? The primary voltage is 60
N/15=160/60
N= 15*160/60=40 turns.
To calculate the number of turns needed in the secondary coil of a step-up transformer, you can use the turns ratio formula:
Turns ratio = (Number of turns in secondary coil) / (Number of turns in primary coil)
In this case, the given primary coil has 15 turns and the desired output voltage is 160 V. The input voltage is 60 V.
To calculate the turns ratio, you need to divide the desired output voltage by the input voltage:
Turns ratio = 160 V / 60 V = 2.67
Since the turns ratio is the same as the ratio of turns, you would need approximately 2.67 times more turns in the secondary coil compared to the primary coil.
To find the exact number of turns in the secondary coil, multiply the turns ratio by the number of turns in the primary coil:
Number of turns in secondary coil = Turns ratio x Number of turns in primary coil
= 2.67 x 15
≈ 40.05
Therefore, you would need approximately 40 turns in the secondary coil to increase the voltage from 60 V to 160 V in a step-up transformer with a primary coil of 15 turns.