Elektros srovės darbas ir galia

Elektros srovės darbas ir galia

9th Grade

10 Qs

quiz-placeholder

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Elektros srovės darbas ir galia

Elektros srovės darbas ir galia

Assessment

Quiz

Physics

9th Grade

Practice Problem

Hard

Created by

VALERIJ SINIAVSKIJ

Used 45+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kokiais vienetais matuojamas elektros srovės darbas?

Amperais

Vatais

Voltais

Džauliais

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pagal kurią formulę apskaičiuojamas elektros srovės darbas?

P=IUP=IU

A=IUtA=IUt

I=URI=\frac{U}{R}

R=ρlSR=\rho\frac{l}{S}

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kuri lygybė neteisinga?

 A=IUtA=IUt 

 I=AUtI=\frac{A}{Ut} 

 U=ItAU=\frac{It}{A} 

 t=AIUt=\frac{A}{IU} 

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kuris prietaisas matuoja elektros srovės darbą?

Ampermetras

Voltmetras

Vatmetras

Elektros skaitiklis

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5 MWh išreiškite SI sistemos matavimo vienetais

1,81010J1,8\cdot10^{10}J

5106J5\cdot10^6J

1,8106J1,8\cdot10^6J

1,8109J1,8\cdot10^9J

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Kokio stiprio srovė lempoje per 10 min atliko 7,2 kJ darbą, kai lempos įtampa 24 V?

30 A

2 A

0.5 A

0,03 A

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

300 W galios elektrinis plaukų džiovintuvas įjungiamas į 220 V įtampos tinklą. Kiek elektros energijos veikiantis plaukų džiovintuvas sunaudoja per 1 s?

300 W

300 J

66 kJ

1.36 J

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