E = qU => q = E/U
q = 0.5 10^-6 / 250 = 0.5*10^-6 / 250 = 2*10^-9 = 2 нКл.
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φ = 250 B
Wp = 0,5 мкДж = 0,5*10⁻⁶ Дж
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Найти q - ?
Решение
Wp=q*φ
q = Wp / φ
q = 0,5*10⁻⁶ Дж / 250 B = 2,5*10⁻⁸ Кл.
Ответ: 2,5*10⁻⁸ Кл.
E = qU => q = E/U
q = 0.5 10^-6 / 250 = 0.5*10^-6 / 250 = 2*10^-9 = 2 нКл.