A toroid has a core (non-ferromagnetic) of inner radius 23 cm and outer radius 28 cm, around which 4000 turns of a wire are wound. If the current in the wire is 9 A, find the magnetic field (a) inside the core of the toroid (b) outside the toroid?
The correct answer is A
Bacterial leaf blight of rice caused by Xanthomonas oryzae can be identified by
The most economical means of managing the ‘tungro virus’ disease in rice is:
Soil formed in the forest comes under……… horizon.
Year 2022 is the international year of
The government announces minimum support prices (MSPs) for 22 mandated crops and FRP for
Which of the following is the chief characteristic of ‘mixed farming’? (2012)
Food Safety Display boards are colour coded for different kinds of food businesses. Which of the following business is NOT matched with the colour code?
Crops grown to supplement the yield of main crops are called _____
e-National Agriculture Market (e-NAM) was launched in the year___
National Research Centre on Seed Spice is located at
