The ratios of primary and secondary currents...

Question 1 / 27070l39ShYTITXdlo88hjp40

Question 1 of 27070l39ShYTITXdlo88hjp40

The ratios of primary and secondary currents in a power transformer:

Question 1 of 27070

The ratios of primary and secondary currents in a power transformer:

🔍 Key Concepts

• Power transformer basics: relationship between turns, voltage, and current • Turns ratio and how it affects voltage ratio • Inverse relationships: when one quantity goes up, another goes down in proportion

💭 Think About

• First, recall the mathematical relationship between the primary and secondary voltages and the turns ratio of a transformer. How are these two related? • Next, think about how current behaves in an ideal transformer when voltage increases or decreases. Does current change in the same direction or the opposite direction? • Consider whether the wire diameter (thickness) directly determines the current ratio, or whether it is chosen based on the current that will flow as a result of the transformer’s design.

✅ Before You Answer

• Be clear on the formula linking voltage ratio to turns ratio in an ideal transformer • From that, deduce the formula linking current ratio to turns ratio and voltage ratio (note which relationships are inverse) • Check whether mechanical factors like wire diameter change the ratio mathematically, or are more about safe current-carrying capacity.

Question 1 of 27070

The ratios of primary and secondary currents in a power transformer:

Are approximately in inverse ratio to the turns ratio

Is to some extent affected by the diameter of the primary and secondary wire

The current ratio is in inverse proportion to the voltage ratio

All of the above

Question 1 / 27070l39ShYTITXdlo88hjp40

Question 1 of 27070l39ShYTITXdlo88hjp40

The ratios of primary and secondary currents in a power transformer:

Back

Question 1 of 27070

The ratios of primary and secondary currents in a power transformer: