# Calculate the number of electrons constituting one coulomb of charge per second through any cross section of a conductor.

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**Explanation:**

### We know that the charge on an electron is negative and it is -1.6⨯10-19 coulomb.

### We need to calculate the number of electrons constituting one coulomb of charge.

### e =1.6 × 10^-19 C

### Total charge required 1Coulomb.

### Therefore q = 1C

### We know the formula

### q=ne

### n =q/e—–(i)

### Hence, 1 C charge is carried by

### Substituting the values in equation (i) we get,

### 1/ (-1.6⨯10^-19) = 6.25 ⨯ 10^18 electrons.

### So, if 1 A current flows through a conductor, then

### 6.25 ⨯ 10^18 electrons pass per a second across the cross-section of the conductor.

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