8- sinf fizika

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

Elektr tokining ishini ta`rifini toping.

Zanjirdagi tok kuchi, kuchlanish va tok o`tgan vaqt ko`paytmasi.To’g’ri javob

Zanjirdagi tok kuchi va kuchlanish ko`paytmasi.

Zanjirdagi kuchlanish kvadratini zanjir qarshiligiga ko`paytmasi.

Zanjirdagi tok kuchining, kvadratini zanjir qarshiligiga ko`paytmasi

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

Elektr tokining quvvati formulasi qaysi qatorda

J∙U To’g’ri javob

U^2/R t

BJ^2

J∙U∙t

115.Fan: Fizika P.Habibullayev, A, Boydadayev, A. Bahromov,M.Yuldasheva ,qiyinchilik darajasi-3

Tok kuchi 3,5 A bo’lganda 12 Vkuchlanishga mo’ljallangan avtomobil elektr lampasi 20sda qancha ish bajaradi

840 J To’g’ri javob

840 Vt

840 KJ

840 kV

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

Agar lampadagi tok kuchi 0,2A bo’lsa, qarshiligi 25 Om bo’lgan elektr lampa spiralida 20 s da qancha issiqlik miqdori ajraladi?

20 J To’g’ri javob

80 J

40 J

200J

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

Uylarni isitishda issiqlik uzatishning qaysi usulidan foydalaniladi?

Konveksiya To’g’ri javob

Barchasi

Issiqlik o’tkazuvchanlik

nurlanish

118.Fan: Fizika P. Habibullayev, A,Boydadayev, A. Bahromov, M.Yuldasheva ,qiyinchilik darajasi-3

Agar buyumni nikellash 50 minut davom etsa buyumda nikel massasi qancha bo’ladi? Tok kuchi 2A. Nikelning elektro kimyoviy ekvivalenti k=0,3∙10^-3g/C

1,8 kg To’g’ri javob

1,8 t

1,8 g

1,8 mg

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

Avtomobil radiusi 100m bo’lgan aylana yo’lda 36 km/soat tezlik bilan harakatlanmoqda.Uning markazga intilma tezlanishini toping. A)10m/s^2 B) 100m/s^2 C) 3600m/s^2 D) 1m/s^2 E) 36m/s^2

1m/s^2To’g’ri javob

10m/s^2

0,1m/s^2

3600m/s^2

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

O’tkazgichlarning zaryad to’plash qobiliyatini xarakterlovchi kattalikni belgilang.

elektr sig’im To’g’ri javob

energiya

quvvat

kuchlanish

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

Elektr sig’im birligini belgilang.

Farad To’g’ri javob

Kulon

Volt

Amper

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

Kuchlanish 2 marta ortsa, elektr sig’imi qanday o’zgaradi?

2 marta kamayadi To’g’ri javob

4 marta ortadi

2 marta ortadi

o’zgarmaydi

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

Elektr zaryad to’plovchi asbobni belgilang.

kondensator To’g’ri javob

tranzistor

diod

reostat

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

Parallel ulanganda kondensator elektr sig’imi qanday o’zgaradi.

ortadi To’g’ri javob

kamayadi

o’zgarmayd

avval ortadi, so’ng kamayadi

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

Ketma- ket ulanganda kondensator elektr sig’imi qanday o’zgaradi.

kamayadi To’g’ri javob

ortadi

o’zgarmayd

avval ortadi, so’ng kamayadi

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

Zanjirning bir qismi uchun Om qonunini belgilang.

O’tkazgichdagi tok kuchi uning uchlaridagi kuchlanishga to’g’ri proporsional, o’tkazgich qarshiligiga teskari proporsional To’g’ri javob

To’liq zanjirdagi tok kuchi zanjir E.Yu.K ning to’liq qarshiligiga nisbatiga teng.

Yopiq sistemada barcha zarralar zaryadlarining algebraik yig’indisi o’zgarmas bo’ladi

Zaryadlar orasidagi o’zaro ta’sir kuchi zaryad modullarining ko’paytmasiga to’g’ri proportsional, ular orasidagi masofaning kvadratiga teskari proporsional.

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

Qarshilik birligini belgilang.

Om To’g’ri javob

Kulon

Volt

Farad

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

O’tkazgichning uzunligi 2 marta ortsa, uning qarshiligi qanday o’zgaradi?

2 marta ortadi To’g’ri javob

2 marta kamayadi

4 marta ortadi

o’zgarmaydi