Equations
Ideal transformer
Electricity and magnetism · id ideal_transformer
\frac{V_s}{V_p} = \frac{N_s}{N_p}
| Symbol | Quantity | Unit | Meaning | Usual range |
|---|---|---|---|---|
Vs | secondary voltage | V | Voltage out of the secondary coil | 0 to 1e+06 |
Vp | primary voltage | V | Voltage into the primary coil | 0 to 1e+06 |
Ns | secondary turns | dimensionless | Number of turns on the secondary coil | 1 to 100000 |
Np | primary turns | dimensionless | Number of turns on the primary coil | 1 to 100000 |
Assumptions
- Ideal transformer: no losses
- Alternating current
Valid when
- No extra conditions.
Found by
Questions with these words retrieve this equation: transformer, turns ratio, step up, step down, primary, secondary, coil.
Source
OpenStax University Physics Volume 2, Chapter 15 (reference; entry written by the project). License: MIT. Entry confidence: 0.99.