Ohm’s Law


The relationship between current, voltage, and resistance is given by Ohm’s law. This law states that the amount of current passing through a conductor is directly proportional to the voltage across the conductor and inversely proportional to the resistance of the conductor. Ohm’s law can be expressed as an equation, V = IR, where V is the difference in volts between two locations (called the potential difference), I is the amount of current in amperes that is flowing between these two points, and R is the resistance in ohms of the conductor between the two locations of interest. V = IR can also be written R = V/I and I = V/R. If any two of the quantities are known, the third can be calculated. For example, if a potential difference of 110 volts sends a 10-amp current through a conductor, then the resistance of the conductor is R = V/I = 110/10 = 11 ohms. If V = 110 and R = 11, then I = V/R = 110/11 = 10 amp.
Under normal conditions, resistance is constant in conductors made of metal. If the voltage is raised to 220 in the example above, then R is still 11. The current I will be doubled, however, since I = V/R = 220/11 = 20 amp.

Popular posts from this blog

CITY LIFE VS VILLAGE LIFE

Village life is better than city life because......... The cost of living is very high in the city. Most goods are very expensive. There is no fresh air and pure water. The environment is polluted with dust, smoke, garbage and dioxide gases from factories. Most of the people who live in the city are corrupted. So there are lots of crimes in the city. Many thefts and murders often take place in the city. The city is always busy and noisy. There are a lot of vehicles and people in the road. The streets are dusty and unclean. So it is hard to lead a healthy life in the city. As well as there are so many advantages in the village life. Mainly the people of the village live in unity and peace. The villagers earn money very hard and earn money enough for live. So they live less competition with each other. So they can reach a good position. They have more friends in the community since it is small. The village people always try to protect their traditional habits and culture. The village
Read more

Summary of "Weathers" Grade- 10 Poem

The poem ‘Weathers’ written by an English poet, Thomas Hardy, talks about two different seasons viz. the spring and the winter seasons.    In the first stanza the beautiful and pleasant spring season is described. He says that in this season cuckoo and nightingale feel good. The light rain flows over pointed leaves of chestnut tree. The poet is pleased as nightingale sings at his best tune. People come out of the house to enjoy the weather and the birds’ song. The young girls are seen in their fine clothes. The people plan to visit different places of south and west. The poet likes this weather as it is liked by all the birds, animals and human as well. In the second stanza he talks about the dullness of the winter season and the cold, damp and wet weather. All the natural beauty turns into dull and unpleasant. The cuckoo hates this weather and the beeches turn dry and brown as their leaves are threshed by the wind. The water drops hang from the wooden bars of gates. The rooks fl
Read more

My visit to Lumbini

 1. Introduction Educational tour is the best way to get knowledge about anything. To get knowledge about historical, religious and natural importance of Lumibini our school organized a four days long educational tour from 25 th -28 th of Kartik 2071. We students of grade 9 and 10 including teachers headed towards Lumbini which lies at the distance of 227 km away from Kathmandu valley. Altogether we were 40 students and 8 teachers including school staff. To make our tour fruitful we have designed some objectives. 2. Objectives a)        To know about cultural and religious importance of Lumbini. b)        To gain knowledge about life of Lord Buddha. c)        To know about geographical and climatic condition of Lumbini . 3. Methodology We had adapted different methods to collect the necessary information. I) Primary source We collected the information through our own eye witness. We also took interviews of local people and monks. II) Secondary sources We
Read more