A transformer has 200 turns on the primary and 20 turns on the secondary. The primary is connected to a direct current source of 100 millivolts. The voltage in the secondary coil will be:_______.
A) zero.
B) 10 millivolts.
C) 20 millivolts.
D) 1000 millivolts.

Respuesta :

Answer:

B) 10 millivolts.

Explanation:

Given that

The number  turns on the primary side ,N₁ = 200 turns

The number  turns on the secondary side,N₂ = 20 turns

The voltage on the primary side ,V₁ = 100 m V

The voltage on the secondary side= V₂

We know that relationship between voltage and the number of turns given as

[tex]\dfrac{V_2}{V_1}=\dfrac{N_2}{N_1}[/tex]

[tex]{V_2}={V_1}\times \dfrac{N_2}{N_1}[/tex]

Now by putting the values

[tex]{V_2}={V_1}\times \dfrac{N_2}{N_1}[/tex]

[tex]{V_2}=100\times \dfrac{20}{200}[/tex]

V₂ = 10 m V

Therefore the answer will be B.

B) 10 millivolts.