Question

a conductor carries a current of 0.5 A.find the amount of charge flowing in 40s.and how many electrons are passing per /min through this conductor

Answer 1

q=it .....q=0.5×40=2coulmb charge

Answer 2

Answer:

$1.2\times10^2^0$ electrons are passing per /min through this conductor.

Explanation:

The charge, current and time relation is given as

q = i t

Here q is the charge and i is the current and t is the time taken.

Given  i = 0.5 A, t = 40 s.

Substitute the given values, we get

$q=0.5A\times40s$

$q=20C$

Thus, charge of 20 C flows in conductor in 40 s.

The charge on electron is  $1.6\times10^-^1^9C$.

If n electrons flow and e is the charge on an electron, then

$n=\frac{q}{e}$

$n=\frac{20C}{1.6\times10^-^1^9C}$

$n=1.2\times10^2^0$.

Thus, $1.2\times10^2^0$ electrons are passing per /min through this conductor.

#Learn More: charge.

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