Question

What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if its primary has 475 turns, its secondary 8 turns, and the input voltage is 114 V

Answer 1

Answer:

Output voltage is 1.92 volts.

Explanation:

Given that,

Number of turns in primary coil, $N_p=475$

Number of turns in secondary coil, $N_s=8$

Input voltage, $V_i=114\ V$

We need to find the voltage output of a transformer used for rechargeable flashlight batteries. For a transformer, the number of turns and the voltage ratio is given by :

$\dfrac{N_p}{N_s}=\dfrac{V_i}{V_o}\\\\\\V_o=114\cdot\dfrac{8}{475}\\\\V_o=1.92\ V$

So, the output voltage is 1.92 volts.