DP 4-3 A wiring circuit for a special lamp in a home is shown in Figure DP 4-3. The lamp has a resistance of 2, and the designer selects R = 100 2. The lamp will light when I≥ 50 mA but will burn out when I > 75 mA. (a) (b) 5V(+ 50 Ω M 300 Ω R ming Figure DP 4-3 Lamp 11/202 Ω Determine the current in the lamp and determine if it will light for R = 100 £2. Select R so that the lamp will light but will not burn out if R changes by ± 10 percent because of temperature changes in the home.

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DP 4-3 A wiring circuit for a special lamp in a
home is shown in Figure DP 4-3. The lamp has a
resistance of 2 , and the designer selects R =
100 22. The lamp will light when I ≥ 50 mA but
will burn out when I> 75 mA.
(a)
(b)
5 V
50 £2
300 Ω
R
Lamp
292
Figure DP 4-3
Determine the current in the lamp and determine if it will light for R = 100 2.
Select R so that the lamp will light but will not burn out if R changes by ± 10 percent
because of temperature changes in the home.
Transcribed Image Text:DP 4-3 A wiring circuit for a special lamp in a home is shown in Figure DP 4-3. The lamp has a resistance of 2 , and the designer selects R = 100 22. The lamp will light when I ≥ 50 mA but will burn out when I> 75 mA. (a) (b) 5 V 50 £2 300 Ω R Lamp 292 Figure DP 4-3 Determine the current in the lamp and determine if it will light for R = 100 2. Select R so that the lamp will light but will not burn out if R changes by ± 10 percent because of temperature changes in the home.
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