E denotes electric field in a uniform conductor, I corresponding current through it, 
drift velocity of electrons and P denotes thermal power produced in the conductor, then which of the following graph is incorrect
|
(a)
|
(b)
|
(c)
|
(d)
|
(c)
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The sun radiates energy in all directions. The average radiations received on the earth surface from the sun is 
.The average earth- sun distance is 1.5 
. The mass lost by the sun per day is (1 day = 86400 seconds)
|
(a) 4.4 |
(b) 7.6 |
(c) 3.8 |
(d) 3.8 |
2μF capacitance has potential difference across its two terminals 200 volts. It is disconnected with battery and then another uncharged capacitance is connected in parallel to it, then P.D. becomes 20 volts. Then the capacity of another capacitance will be
|
(a) 2 μF |
(b) 4 μF |
(c) 18 μF |
(d) 10 μF |
A conductor in the form of a right angle ABC with AB = 3 cm and BC = 4 cm carries a current of 10 A. There is a uniform magnetic field of 5 T perpendicular to the plane of the conductor. The force on the conductor will be
|
(a) 1.5 N |
(b) 2.0 N |
(c) 2.5 N |
(d) 3.5 N |
