7-sinf 1-chorak uchun nazorat testi 1– variant 1

10. Zaryad miqdorining o’lchov birligini belgilang ?
A) volt ( V ) B) Farad ( F ) C) Joul ( J ) D) Kulon ( C )
11. Elektr maydonining tarqalish tezligi qachaga teng ?
A) 300 000 km/s B) aniqlanmagan C) tezlikka ega emas D) 30 km/s
12. 0,22 kV kuchlanish necha Voltga teng?
A) 0,22 V B) 22 V C) 2200 V D) 220 V
13. Zaryadlangan o'tkazgichda zaryadlar qanday taqsimlanadi ?
A) O'tkazgichning butun hajmi bo'ylab tekis B) O'tkazgichning butun sirti bo’ylab tekis C) O'tkazgichning markazida D) O'tkazgichning shakliga bog'liq holda, uning sirtida notekis
14. Elektr maydon kuchlanganligi formulasini belgilang?
A) F = E ∙ q₀ В) E = С) E = D) C=q/U
15. Ampermetr zanjirga qanday ulanadi ?
A) Parallel B) Ketma-ket C) Aralash ulanadi D) Parallel yoki ketma-ket
8-sinf 1-chorak uchun nazorat testi
2 – variant


1. Kulon qonuni to’g’ri yozilgan formulani belgilang
A) F = k B) F = k C) F = G D) F = k
2. Ikki zaryaddan biri 4 marta , ular orasidagi masofa esa 2 marta oshirildi. Zaryadlar orasidagi o’zaro ta’sir kuchi qanday o’zgaradi ?
A) 8 marta oshadi B) o’zgarmaydi C) 2 marta kamayadi D) 16 marta oshadi
3. Elektr kuchlanish formulasini belgilang
A) A = U ∙q B) U = A/q C) E = D) C=q/U
4. Ampermetr zanjirga qanday ulanadi ?
A) Parallel B) Ketma-ket C) Aralash ulanadi D) Parallel yoki ketma-ket
5. Xalqaro birlklar sistemasidagi tok kuchining o'lchov birligini aniqlang ?
A) C/ V B) Nm²/C² C) V D) A
6 . Elektron massasi to’g’ri yozilgan javobni belgilang ( kg ).
A)1,6∙10^-19 B) 1,9∙10^-16 C) 9,1∙10^-19 D) 9,1∙10^-31
7. Gapni ma’nosiga ko’ra to’g’ri to’ldiring: “ Elektrni o’zidan o’tkazuvchi moddalar …. deb ataladi. “
A) izolyatorlar B) dielektriklar C) o’tkazgichlar D) o’tkazmovchilar