National Bird Day is celebrated every year on 5 January . This day is observed to spread awareness about birds, their importance in nature, and the need to protect them. Birds are beautiful living beings and play a very important role in keeping our environment healthy. Origin of National Bird Day National Bird Day was first celebrated in the year 2002 . It was started by bird lovers and environmental groups to protect birds from dangers like deforestation, pollution, and illegal hunting. The main aim of this day is to teach people, especially students, why birds are important and how we can help save them. Why Is National Bird Day Celebrated Every Year? National Bird Day is celebrated every year because many bird species are disappearing due to human activities. Cutting trees, using plastic, pollution, and climate change are harming birds and their homes. This day reminds us that: Birds need protection Nature should be respected Everyone has a responsibil...
Ohmic and un-ohmic circuit Ohmic circuit A circuit which obey Ohm's law i.e., the curve drawn between voltage and current for a given circuit is found to be a straight line such that V α I is known as ohmic circuit. Here V is voltage and I is current Un-ohmic or non-ohmic circuit A circuit which does not obey Ohm's law i.e., the curve drawn between voltage and current for a given circuit is not found to be a straight line showing that the voltage V is not directly proportional to the current I is known as un-ohmic circuit.