A step-up transformer is used on a 100 V line to increase the potential difference to 1200 V. If the primary has 120 turns, then what is the number of turns in the secondary coil?
1440 turns
1000 turns
100 turns
10 turns
Thanks!!!!!
120 * (1200/100) = ?
Thanks!!!!
1440 turns
To find the number of turns in the secondary coil of a step-up transformer, you can use the principle of conservation of energy. In a transformer, the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the input voltage (V1) to the output voltage (V2). This can be represented by the equation:
N1/N2 = V1/V2
Where:
N1 = number of turns in the primary coil
N2 = number of turns in the secondary coil
V1 = input voltage (100 V in this case)
V2 = output voltage (1200 V in this case)
Plugging in the given values, the equation becomes:
120/N2 = 100/1200
To solve for N2, you can cross-multiply and then divide to isolate N2:
120 * 1200 = 100 * N2
N2 = (120 * 1200) / 100
Simplifying the equation, you get:
N2 = 1440
Therefore, the number of turns in the secondary coil is 1440.