Question

2×105 electrons passes through the cross sectional area of a metal

in 10 second, then calculate the strength of electric current.

Question for class 10 imp.

Answer 1

Given that,

Time = 10 sec

Number of electron $N= 2\times10^{5}$

We need to calculate the charge

Using formula of charge

$Q=Ne$

Where, N = number of electron

e = charge of electron

Put the value into the formula

$Q=2\times10^{5}\times1.6\times10^{-19}$

$Q=3.2\times10^{-14}\ C$

We need to calculate the strength of electric current

Using formula of current

$i=\dfrac{Q}{t}$

Where, Q = charge

t = time

Put the value into the formula

$i=\dfrac{3.2\times10^{-14}}{10}$

$i=3.2\times10^{-15}\ A$

Hence, The strength of electric current is $3.2\times10^{-15}\ A$

Answer 2

Answer:

here is answer

Explanation:

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