Question

The electricity supplied for our domestic purpose has a frequency of :

• A. 100 hertz
• B. 50 hertz
• C. 150 hertz
• D. 200 hertz

Answer 1

Answer:

B. 50 hertz

As per Indian standard for domestic power supply we use A.C current, which is also known as alternating current since they change its polarity at a certain interval of time. Now the two principal properties of the A.C electric power supply are Voltage and frequency. And we use 220 V and 50 Hz power supply for our common domestic use. Where 220 V is the potential difference and 50 Hz is its frequency.