Determine the strength of the electric current in the conductor if N = 2 * 10 ^ -15 electrons

| April 25, 2021 | education

Determine the strength of the electric current in the conductor if N = 2 * 10 ^ -15 electrons pass through the cross-section of the conductor for a time interval t = 2 * 10 ^ -3 seconds.

t = 2 * 10 ^ -3 s.

N = 2 * 10 ^ 15.

q = 1.6 * 10 ^ -19 Cl.

I -?

The strength of the current I is a physical quantity that shows what kind of electric charge passes through the cross-section of the conductor per unit of time. The current I is determined by the formula: I = Q / t.

Since N electrons pass through the cross section of the conductor, each of which carries an elementary charge q = 1.6 * 10 ^ -19 C, an electric charge Q passes through the cross section of the conductor: Q = q * N.

I = q * N / t.

I = 1.6 * 10 ^ -19 C * 2 * 10 ^ 15/2 * 10 ^ -3 s = 0.16 A.

Answer: the current in the conductor is I = 0.16 A.



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