Exercise 4.3 A

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

Specify the power of one lamp as well as the power of the lamps. Both lamps are similar.

Answer: Power of the lamps is 0,43 W; the power of a single lamp is 0,22 W

Exercise 4.3 B

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

Specify the power of one lamp as well as the power of the lamps. Both lamps are similar.

Answer: Power of one lamp is 0,32 W; power of both lamps is 0,65 W

Exercise 4.3 C

DifficultySecondary SchoolHigh school/other
★BasicEasy
★★DemandingBasic
★★★Demanding
★★★★Difficult
★★★★★Very difficult

Specify the power of one lamp as well as the power of the lamps. Both lamps are similar.

Answer: Power of the lamps is 0,90 W; the power of one lamp is 0,45 W