8- sinf fizika

60.Fan: P. Habibullayev, A, Boydadayev, A. Bahromov, M. Yuldasheva ,qiyinchilik darajasi-1

Bir elektrlangan jism boshqa jismga nima orqali ta’sir korsatadi?

elektr maydon To’g’ri javob

havo

magnit maydon

suv

61.Fan: Fizika P. Habibullayev,A, Boydadayev, A. Bahromov, M.Yuldasheva qiyinchilik darajasi-2

Metall jism manfiy zaryadlansa, uning massasi qanday o’zgaradi?

o’zgarmaydi To’g’ri javob

oshadi

kamayadi

bog’liq emas

62.Fan: Fizika P. Habibullayev, A, Boydadayev, A. Bahromov, M. Yuldasheva qiyinchilik darajasi-2

C1 va C2 sig’imli kondensatorlar parallel ulanganda uning umumiy qarshiligi qanday?

C=C1+C2 To’g’ri javob

C=C1/2

C=C1C2/C1+C2

1/C=1/C1+1/C2

63.Fan: Fizika P. Habibullayev, A, Boydadayev, A. Bahromov, M. Yuldasheva ,qiyinchilik darajasi-2

Yassi kondensatorning elektr sig’imi formulasi qanday ifodalanadi?

C=e0eS/d To’g’ri javob

C=C1C2/C1+C2

C1+C2

C=q/U

64.Fan: Fizika P.Habibullayev,A,Boydadayev, A.Bahromov, M.Yuldasheva,qiyinchilik darajasi-2

Maydoning biror biror nuqtasidagi 12 zaryadga 3mN kuch ta’sir etmoqda. Bu nuqtadagi maydon kuchlanganligini toping.

250 N/C To’g’ri javob

40 N/C

25 N/C

36 N/C

65.Fan: Fizika P.Habibullayev,A,Boydadayev, A.Bahromov,M.Yuldasheva,qiyinchilik darajasi-2

Zaryadlari +5q va -10q bo’lgan ikkita bir xil suv tomchi birlashdi. Hosil bo’lgan tomchining zaryadi qanday bo’ladi.

-5q To’g’ri javob

-15q

-10

+5q

66.Fan: Fizika P.Habibullayev,A,Boydadayev, A.Bahromov, M.Yuldasheva,qiyinchilik darajasi-2

Jismda 1,2 *10^4 ta ortiqcha elektron bor . Jism zaryadini toping.

1,92 *10^-15C To’g’ri javob

4*10^-14C

1,2*10^-19C

1,6*10^-14C

67.Fan: FizikaP. Habibullayev, A, Boydadayev, A. Bahromov, M.Yuldasheva ,qiyinchilik darajasi-1

200 necha faradga teng?

2*10^-4F To’g’ri javob

2*10^-6F

200 F

2000 F

68.Fan: Fizika P.Habibullayev,A,Boydadayev, A.Bahromov, M.Yuldasheva,qiyinchilik darajasi-2

Elektr zanjiridagi kuchlanishni rostlash , ya`ni o`zgartirish uchun qo`llaniladigan asbob nomini belgilang?

Potensiometr To’g’ri javob

Reostat

Rezistor

Voltimetr

69.Fan: P.Habibullayev, A,Boydadayev, A. Bahromov, M.Yuldasheva ,qiyinchilik darajasi-2

C1 va C2 sig’imli kondensatorlar ketma- ket ulanganda uning umumiy qarshiligi qanday?

C=C1C2/C1+C2 To’g’ri javob

C=C1+C2

C=C1/2

1/C=1/C1+1/C2

70.Fan: P. Habibullayev, A, Boydadayev, A. Bahromov, M. Yuldasheva ,qiyinchilik darajasi-1

Qaysi zarra musbat elementar zaryadga ega?

praton To’g’ri javob

elektron

nrytron

pozitron