Ten million electrons pass from point P to point Q in one micro second. The current and its direction is
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A current in a wire is given by the equation, I =2t^{2} − 3t + 1, the charge through cross section of wire in time interval t = 3s to t = 5s is
The current in a wire varies with time according to the equation I = 4 + 2t, where I is in ampere and t is in second. The quantity of charge which has to be passed through a crosssection of the wire during the time t = 2s to t = 6s is?
In an atom electrons revolves around the nucleus along a path of radius 0.72Å making 9.4×10^{18} revolution per second. The equivalent current is (e = 1.6×10^{−19}C)
105 videos425 docs114 tests

105 videos425 docs114 tests
