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When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?
If the intensity of the magnetic field perpendicular to current carrying conductor is 100T, the length of the conductor is 3m and the current in the conductor is 10A, calculate the magnitude of force perpendicular to the electric field.
A given conductor carrying a current of 1 ampere. It produces an amount of heat equal to 2000 J. If the current through the conductor is doubled, then the amount of heat produced will be
When a current of 5A flows through a conductor of resistance 10 Ω for 1 second, a heating effect is produced due to the heat energy generated in the conductor. Calculate the value of heat energy generated.
A dielectric and a conductor are placed in an external electric field of magnitude Eext. The charge density induced at the surface of the dielectric and the conductor are σd and σe respectively.  The net electric field inside the dielectric and the conductor are Ed and Ec respectively. Then, 
When electric current is passed through a metallic conductor, amount of heat produced in the conductor depends on it?
When electric current is passed through a metallic conductor, amount of heat produced in the conductor depends on it
Read the given passage/argument and answer the question that follow it. Govt of India has reconfirmed their plans to go full ballistic for electric cars. An announcement which will make Elon Musk and patrons of electric vehicles super happy, India plans to allow the sale of only electric cars by 2030, which is just 12 years away. This means that petrol/diesel cars won’t be allowed on the road after 2030. This is a massive, powerful endorsement of electric, green technology, and can change transportation industry forever.  Which of the following argument can be made from above passage?
When a conductor is carrying AC current, the current is not distributed in the conductor uniformly. Rather it has tendency to concentrate near the surface of the conductor. What is this effect known as?
In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. I boarded a bus from Tilak Nagar to the Railway Station. P. It was very embarrassing when people looked at me as if I was a fool. Q. The conductor came and I asked for a ticket. R. I was very happy to occupy a seat as I was sure that my journey will be comfortable. S. He told me that I had boarded a wrong bus. 6. But the conductor was kind enough to tell me that I could get down on the next-stand and get bus to the station.