Table of Contents
How does the number of turns affect a transformer?
The number of turns on both the primary and secondary coils affects the output voltage of the transformer. In fact the ratio of the output voltage to the input voltage is the same as the ratio of the number of turns on the secondary to the number of turns on the primary.
Why can a transformer be adjusted to have different number of turns on the secondary coil?
If you change the number of turns in the coils you change the induced emf. This allows you to change (transform) the voltage from the primary to the secondary coil. So if number of turns on the secondary coil is greater than on the primary coil, the output voltage will be greater than the input voltage.
How are current and resistance related are they directly proportional or inversely proportional Why?
The current in a circuit is directly proportional to the electric potential difference impressed across its ends and inversely proportional to the total resistance offered by the external circuit. And the greater the resistance, the less the current.
What is the relationship between turns and current in a transformer?
If the voltage is high so current will be low and hence there is inverse relationship between turns and current. The other line of thinking is that the transformer maintains equal mmf on its primary and secondary. MMF is the product of number of turns (N) and current (I) in that winding.
What is the law of voltage in a transformer?
The change in voltage is directly proportional to the ratio of the number of turns in the primary coil to the number of turns in he secondary coil. Formula for the transformer law of voltage. V= voltage, N = number of turns, ₁ = primary coil, ₂ = secondary coil.
What is the relationship between voltage and current in a winding?
The total induced voltage in each winding is proportional to the number of turns in that winding and the current is inversely proportional to both voltage and number of turns. E1 / E2 = N1 / N2 = I2 / I1
What is the relationship between MMF and current in transformer?
The other line of thinking is that the transformer maintains equal mmf on its primary and secondary. MMF is the product of number of turns (N) and current (I) in that winding. So N*I = constant for a transformer. So if number of turns increase , the current in that winding decrease to maintain mmf balance.