Question

A step up transformer has turns ratio $10 : 1$. A source of emf 2 volts is fed to the primary. Secondary voltage developed is

• A. 20 V
• B. 10 V
• C. 2 V
• D. zero

Answer 1

Answer: (A)

20 V

Answer 2

Given,$N_S : N_P = 10 : 1 , V_P = 2V$
$\therefore \, \, \, V_S = \frac{N_S}{N_P} V_P = \frac{10}{1} \times 2 = 20 V$