Respuesta :
A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge.The number of electron is: 3.4 × 1O²²
What is flashlight battery?
Traditional flashlights emit light from an incandescent bulb that is powered by a battery. Battery current warms the filament wire within the light bulb, causing it to glow and emit light.
When a flashlight's circuit, which consists of the batteries, switch, and light bulb, is complete, the chemical energy in the batteries is transformed into electrical energy. The light bulb converts electrical energy into light (electromagnetic / radiant energy) and some heat (thermal energy).
Given that,
current = 0.50 A
time = 3 h
The expression for current, I = Q/t
where Q = charge and t = time taken
The mathematical expression for quantization of the charge,
Q = N × e
Where, N = is the number of the charged particle and e = is the charge on an electron.
Now, calculate the amount of charge,
I = Q/t
or, 0.50 A = Q / [(3h ×3600 sec)/1 h]
or, Q = 5400 C
Next, calculate the number of electrons:
Q = N × e
or, 5400 C = N × ( 1.6 × 10⁻¹⁹ C)
or, N = 3375 × 1O¹⁹
Thus, the number of electron is: 3.4 × 1O²²
To know more about flashlight battery refer to:
https://brainly.com/question/20481109
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