What amount of electricity passes through the cross-section of the conductor during 1 s
| April 25, 2021 | education
What amount of electricity passes through the cross-section of the conductor during 1 s, if during this period of time if during this period of time the strength of the current increases uniformly from 0 to 6 A.
t = 1 s.
I0 = 0 A.
I = 6 A.
Q -?
According to the definition, the current strength I is determined by the formula: I = Q / t, where Q is the electric charge that passes through the cross-section of the conductor, t is the charge transit time.
Since the current strength varies from I0 to I, then we find its average value Iav = (I – I0) / 2.
Q / t = (I – I0) / 2.
Q = (I – I0) * t / 2.
Q = (6 A – 0 A) * 1 s / 2 = 3 Cl.
Answer: an electric charge Q = 3 C passes through the cross-section of the wire.
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