Answer
Verified
447.3k+ views
Hint: The frequency of AC or alternating current is the number of cycles that the current completes in one second. The mains frequency is the frequency of the AC current that reaches our homes and we use for all our purposes. Most European countries along with India also have the frequency of their AC mains as $50\text{ Hz}$.
Complete step by step answer:
The frequency of AC or alternating current is a measure of the number of total cycles that the sinusoidal variation of the current completes in one second. Since, in one cycle, the current changes direction twice, this means that in one second, the alternating current will change its direction twice the number of its frequency.
In general, European countries use $50\text{ Hz}$ as the frequency for their AC mains. Indian also follows this and similarly, also uses $50\text{ Hz}$ as the frequency for its AC mains. This means that the alternating current changes direction twice the frequency, that is $\left( 50\times 2=100 \right)$ times in one second. This is the AC that reaches our homes and we use it for all our daily purposes ranging from running fans to charging our mobiles.
Hence, the correct option is B) $50\text{ Hz}$.
Additional information:
The United States of America uses $\text{60 Hz}$ as the frequency for its AC mains.
Note: It might be of interest to students to know that the impedance of a circuit largely depends on the frequency of the AC mains. Hence, it is essential that there is no change in the frequency of the AC mains. All electrical appliances and products developed for the Indian market are configured in such a way so that they work optimally at $50\text{ Hz}$ frequency of AC. Hence, students might have also noticed that plug points in the USA and India are of different shapes.
Complete step by step answer:
The frequency of AC or alternating current is a measure of the number of total cycles that the sinusoidal variation of the current completes in one second. Since, in one cycle, the current changes direction twice, this means that in one second, the alternating current will change its direction twice the number of its frequency.
In general, European countries use $50\text{ Hz}$ as the frequency for their AC mains. Indian also follows this and similarly, also uses $50\text{ Hz}$ as the frequency for its AC mains. This means that the alternating current changes direction twice the frequency, that is $\left( 50\times 2=100 \right)$ times in one second. This is the AC that reaches our homes and we use it for all our daily purposes ranging from running fans to charging our mobiles.
Hence, the correct option is B) $50\text{ Hz}$.
Additional information:
The United States of America uses $\text{60 Hz}$ as the frequency for its AC mains.
Note: It might be of interest to students to know that the impedance of a circuit largely depends on the frequency of the AC mains. Hence, it is essential that there is no change in the frequency of the AC mains. All electrical appliances and products developed for the Indian market are configured in such a way so that they work optimally at $50\text{ Hz}$ frequency of AC. Hence, students might have also noticed that plug points in the USA and India are of different shapes.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Which are the Top 10 Largest Countries of the World?
Difference Between Plant Cell and Animal Cell
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Give 10 examples for herbs , shrubs , climbers , creepers
Change the following sentences into negative and interrogative class 10 english CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE