Alternating Current Question 8
Question 8 - 2024 (30 Jan Shift 1)
Primary coil of a transformer is connected to $220 \mathrm{~V}$ ac. Primary and secondary turns of the transforms are 100 and 10 respectively. Secondary coil of transformer is connected to two series resistance shown in shown in figure. The output voltage $\left(\mathrm{V}_{0}\right)$ is :
(1) $7 \mathrm{~V}$
(2) $15 \mathrm{~V}$
(3) $44 \mathrm{~V}$
(4) $22 \mathrm{~V}$
Show Answer
Answer: (1)
Solution:
$\frac{\varepsilon_{1}}{\varepsilon_{2}}=\frac{N_{1}}{N_{2}}=\frac{100}{10} \Rightarrow \varepsilon_{2}=22 \mathrm{~V}$
$I=\frac{22}{22 \times 10^{3}}=1 \mathrm{~mA}, V_{0}=7 \mathrm{~V}$
