When 10 ohm load is applied to a unknown voltage source a current of 2A flows and when the Load resistance is increased to 20 ohm, the current drops to 2A. if a load of 15 ohm is connected across the source, what is the voltage across is it? also calculate the power dissipated in the circuit.

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AB is a current carrying conductor in the plane of the paper as shown in the figure below. (i) What is the direction of the magnetic field produced by it at point ‘X’? Write the statement of the rule used to find the direction of field lines. (ii) If the polarity of the battery connected to the wire is reversed, how would the direction of the magnetic field be changed? (iii) Point ‘X’ is at a distance r1 and point ‘Y’ is at a distance r2 (r1

formula of c in curies temperature please ansewr i am waiting for the answer

Describe in operation electro dynamic whattmetermeter

For minimum flux the angle between the magnetic field and normal to the surface is