2. Kuchlanishni o’lchash uchun qaysi asbobdan foydalaniladi ? A dinamometr b ampermetr c voltmetr d elektrometr 3

8 -sinf
I - variant
1 . Tok kuchini husoblash formulasini aniqlang .
A) U=A/q B) I= q/t C) C=C₁+C₂ D) E=F/q₀
2. Kuchlanishni o’lchash uchun qaysi asbobdan foydalaniladi ?
A) Dinamometr B) Ampermetr C) Voltmetr D) Elektrometr
3. Eng kichik ( elementar ) zaryad miqdori nimaga teng ( C ) ?
A) 1,9∙10^-16B) 1,6 ∙ 10^-19С)1,6 ∙10¹⁹ D) 9 ∙ 10^-31
4. Quyidagi zarralarning qaysi biri manfiy zaryadga ega ?
1.Elektron 2.Proton 3.Neytron 4.Yadro
A) 1 B) 2 C) 3 D) 4
5. Gapni to'ldiring: "Zaryadli zarralarning o'tkazgich bo'ylab ozgarmas miqdordagi oqimi ….. deb atatladi."
A) o'zgarmas tok B) elekt toki C) o'zgaruvchan tok D) elektr zaryadi
6. Kulon qonuni formulasini belgilang
A) F = k_{ } B) F = k _{ } C) F = G_{ } D) E = F/q₀
7. 400 mA necha A ga teng ?
A) 0, 004 B) 400 C) 4 D) 0,4
8. Metallarda elektr tokini qanday zarralarning hosil qiladi ?
A) Musbat ionlar B) Musbat ionlar va erkin elektronlar
C) Elektr maydoni ta’sirida erkin elektronlarning harakati
D) Atom yadrolarining harakati
9. Elektr sig’imining o’lchov birligini belgilang ?
A) volt ( V ) B) Farad ( F ) C) Joul ( J ) D) Kulon ( C )
10. 0,22 kV kuchlanish necha Voltga teng?
A) 0,22 V B) 22 V C) 2200 V D) 220 V
11. Elektr maydon kuchlanganligi formulasini belgilang?
A) F = E ∙ q₀ В) E =_{ } С) E = _{ } D) C=q/U
12. Ampermetr zanjirga qanday ulanadi ?
A) Parallel B) Ketma-ket C) Aralash ulanadi D) Parallel yoki ketma-ket