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(b) In Figure 1.2, calculate (0) (ii) () the current Is and the voltage V. when the switch SW is open, the current Is and the power P: dissipated at the resistor R: when the switch SW is closed, the energy W: consumed in the resistor R₁ in joules and kWh when the switch SW is closed for 10 hours. E 33 V R₁ Is 402 www V. R₂ 12 (2 www SW Figure 1.2 R₂ 18 Ω ww R₁ R₁ 802 (c) In Figure 1.3, determine (1) the current Is. (i) the value of the resistor Ri. E 1₁=70 mA R₁3 1₂= 25 mA ha R₂ 1.6 ΚΩ Figure 1.3 R₂ 4kQ R₁ 52.4 ΚΩ

(b) In Figure 1.2, calculate (0) (ii) () the current Is and the voltage V. when the switch SW is open, the current Is and the power P: dissipated at the resistor R: when the switch SW is closed, the energy W: consumed in the resistor R₁ in joules and kWh when the switch SW is closed for 10 hours. E 33 V R₁ Is 402 www V. R₂ 12 (2 www SW Figure 1.2 R₂ 18 Ω ww R₁ R₁ 802 (c) In Figure 1.3, determine (1) the current Is. (i) the value of the resistor Ri. E 1₁=70 mA R₁3 1₂= 25 mA ha R₂ 1.6 ΚΩ Figure 1.3 R₂ 4kQ R₁ 52.4 ΚΩ

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter10: Contactors, Relays, And Overloads
Section: Chapter Questions
Problem 19RQ
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Need help on question B and C ,thanks

(b) In Figure 1.2, calculate (0) (ii) (i) the current Is and the voltage V. when the switch SW is open, the current Is and the power P: dissipated at the resistor R₁ when the switch SW is closed, the energy W: consumed in the resistor R₁ in joules and kWh when the switch SW is closed for 10 hours. E 33 V Is R₁ 40 Ω www R₂ 1292 ww V₂ SW Figure 1.2 R₂ 18 Ω www R₁ 802 (c) In Figure 1.3, determine (1) the current Is, (i) the value of the resistor R. E 1,70 mA R₁ 1₂= 25 mA ha R₂ 1.6 ΚΩ Figure 1.3 R₂ 4kQ R₂ 52.4 ΚΩ
Transcribed Image Text:(b) In Figure 1.2, calculate (0) (ii) (i) the current Is and the voltage V. when the switch SW is open, the current Is and the power P: dissipated at the resistor R₁ when the switch SW is closed, the energy W: consumed in the resistor R₁ in joules and kWh when the switch SW is closed for 10 hours. E 33 V Is R₁ 40 Ω www R₂ 1292 ww V₂ SW Figure 1.2 R₂ 18 Ω www R₁ 802 (c) In Figure 1.3, determine (1) the current Is, (i) the value of the resistor R. E 1,70 mA R₁ 1₂= 25 mA ha R₂ 1.6 ΚΩ Figure 1.3 R₂ 4kQ R₂ 52.4 ΚΩ
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