Elektrostatik maydon — Masalalar yechish — 10-sinf Fizika test savollari

1.Masala namunasida sharchaning massasi va A nuqtadagi tezligi mos ravishda qanday berilgan?

• A)m=100g, υA=20cm/s
• B)m=10g, υA=2cm/s
• C)m=1g, υA=2cm/s
• D)m=10g, υA=20cm/s

2.Masala namunasida A va B nuqtalarning potensiallari (φA, φB) hamda sharcha zaryadi q qanday berilgan?

• A)φA=0, φB=100V, q=10nC
• B)φA=100V, φB=0, q=100nC
• C)φA=100V, φB=0, q=10nC
• D)φA=10V, φB=0, q=10nC

3.Masala namunasida sharchaning B nuqtadagi tezligi taxminan nechaga teng deb topilgan?

• A)≈2,4 cm/s
• B)≈0,4 cm/s
• C)≈14 cm/s
• D)≈1,4 cm/s

4.25-mashqning 1-bandida sovun pufakchasining zaryadi qancha va massasi necha gramm deb berilgan?

• A)q=2,22·10⁻¹⁰ C, m=0,01 g
• B)q=2,22·10⁻⁸ C, m=0,1 g
• C)q=22,2·10⁻¹⁰ C, m=0,01 g
• D)q=2,22·10⁻¹⁰ C, m=0,1 g

5.25-mashqning 4-bandida yassi havo kondensatorining plastinkalari yuzi va ular orasidagi masofa qanday berilgan?

• A)Yuzi 2 m², masofa 1,5 mm
• B)Yuzi 1 m², masofa 1,5 mm
• C)Yuzi 1 m², masofa 15 mm
• D)Yuzi 0,1 m², masofa 1,5 mm

6.25-mashqning 1-bandidagi sovun pufakchasi muvozanatda turishi uchun (m=0,01 g, q=2,22·10⁻¹⁰ C, plastinkalar oralig'i 5 cm, g=9,8 m/s²) kondensator plastinkalari orasidagi potensiallar farqi taxminan qanchaga teng?

• A)≈22 523 V
• B)≈441 441 V
• C)≈22 072 V
• D)≈22 072 072 V

7.25-mashqning 2-bandida (potensial 792 V, sirt zaryad zichligi 3,33·10⁻⁷ C/m²) sharchaning radiusi taxminan qanchaga teng?

• A)≈4,21 cm
• B)≈1,05 cm
• C)≈21,03 cm
• D)≈2,10 cm

8.25-mashqning 3-bandida elektron tezligi υ1=10 Mm/s dan υ2=30 Mm/s gacha oshganda, ko'chishning boshlang'ich va oxirgi nuqtalari orasidagi potensiallar farqi |φ1−φ2| taxminan qanchaga teng bo'ladi?

• A)≈2275 V
• B)≈4550 V
• C)≈1138 V
• D)≈22750 V

9.25-mashqning 4-bandida (yuzi 1 m², masofa 1,5 mm, havo) yassi kondensatorning sig'imi taxminan qanchaga teng?

• A)≈59 nF
• B)≈5,9 nF
• C)≈5,9 pF
• D)≈0,59 nF

10.25-mashqning 5-bandida Yer sharining radiusi 6400 km deb olinganda, uning elektr sig'imi taxminan qanchaga teng bo'ladi?

• A)≈56,6 μF
• B)≈0,712 μF
• C)≈712 μF
• D)≈1424 μF