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Answer on Electromagnetism Question for kola

Question #55897
19 A nichrome wire is 1.0m long and
in cross-sectional area. It carries a current of 4.0 A when a potential difference of 2 V is applied between its ends. Calculate the conductivity of the wire.

20 The current I in a conductor as a function of time t is given as
where current is in ampres A and t is in seconds s. What quantity of charge moves across a section through the conductor during the interval t=2s to t=5s?
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