Question

50 points
plz answer this
it's urgent​

Answer 1

Answer:

The charge of an electron is 1.6 x 10-19C.

Thus for a current of 10 mA, the charge going to screen in one scond is 10 mC

thus number of electrons, n = (10 x 10-3)/(1.6 x 10-19) = 6.25 x 1016

In a minute charge striking the screen = 10 * 60 = 600 mC

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.I have same question of this type and this is the way to do it

u have to just change the value from 10 to 4.8

please please mark my answer as brainlist

Answer 2

Answer:

3×10¹³ electrons

Explanation:

Current beam, i = 4.8 μA

So charge flown in 1 sec = i×t = 4.8×1 = 4.8 μC

Charge of one electron = 1.6 x 10⁻¹⁹ C.

Number of electrons to make 4.8 μC = $\frac{4.8 \times 10^{-6}}{1.6 \times 10^{-19}} = 3 \times 10^{13}\ \text{electrons}$

Hence, 3×10¹³ electrons strike the TV per second.