A tv set picture tube shoots out a beam of electron .the current due to this beam is 5mA per minute how many electron will strike t.v. screen every second?

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Solution

Dear Student,

As Given -
Current, I = 5 mA = 0.005 A;
Time, T = 1 sec;
Charge, Q = ?

As per the formula:

Charge = Current x Time
Q = 0.005 x 1
Q = 0.005 C

Now,

Apply,
Q = n x e
n x 1.6 x 10^-19 = 0.005
n = 0.005/1.6 x 10^-19
n = 0.003125 x 10¹⁹
No of electrons are 3.12 x 10¹⁶

Regards

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A tv set picture tube shoots out a beam of electron .the current due to this beam is 5mA per minute how many electron will strike t.v. screen every second?

Dear Student, As Given - Current, I = 5 mA = 0.005 A; Time, T = 1 sec; Charge, Q = ? As per the formula: Charge = Current x Time Q = 0.005 x 1 Q = 0.005 C Now, Apply, Q = n x e n x 1.6 x 10-19 = 0.005 n = 0.005/1.6 x 10-19 n = 0.003125 x 1019 No of electrons are 3.12 x 1016 Regards

Dear Student,

As Given -
Current, I = 5 mA = 0.005 A;
Time, T = 1 sec;
Charge, Q = ?

As per the formula:

Charge = Current x Time
Q = 0.005 x 1
Q = 0.005 C

Now,

Apply,
Q = n x e
n x 1.6 x 10^-19 = 0.005
n = 0.005/1.6 x 10^-19
n = 0.003125 x 10¹⁹
No of electrons are 3.12 x 10¹⁶

Regards