A child's electronic toy is supplied by three 1.58 V alkaline cells having internal resistances of 0.0210 0 in series with a 1.53 (a) Draw a circuit diagram of the toy and its batteries. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen (b) What current (in A) flows? (c) How much power (in W) is supplied to the load? (d) What is the internal resistance (in 0) of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?

University Physics Volume 2
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Chapter10: Direct-current Circuits
Section: Chapter Questions
Problem 45P: A child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of...
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A child's electronic toy is supplied by three 1.58 V alkaline cells having internal resistances of 0.0210 Q in series with a 1.53 V carbon-zinc dry cell having a 0.190 0 internal resistance. The load resistance is 15.0 0.
(a) Draw a circuit diagram of the toy and its batteries. (Submit a file with a maximum size of 1 MB.)
Choose File No file chosen
(b) What current (in A) flows?
A
(c) How much power (in W) is supplied to the load?
(d) What is the internal resistance (in O) of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
Transcribed Image Text:A child's electronic toy is supplied by three 1.58 V alkaline cells having internal resistances of 0.0210 Q in series with a 1.53 V carbon-zinc dry cell having a 0.190 0 internal resistance. The load resistance is 15.0 0. (a) Draw a circuit diagram of the toy and its batteries. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen (b) What current (in A) flows? A (c) How much power (in W) is supplied to the load? (d) What is the internal resistance (in O) of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
The label on a portable radio recommends the use of rechargeable nickel-cadmium cells (Nicads), although they have a 1.25 V emf while alkaline cells have a 1.58 V emf. The radio has a 3.30 n resistance.
(a) Draw a circuit diagram of the radio and its batteries. (Submit a file with a maximum size of 1 MB.)
Choose File No file chosen
(b) Calculate the power delivered to the radio (in W) when using NiCad cells each having an internal resistance of 0.0410 0.
2426939394
X W
(c) Calculate the power delivered to the radio (in W) when using alkaline cells each having an internal resistance of 0.210 0.
w
(d) Does this difference seem significant, considering that the radio's effective resistance is lowered when its volume
turned up?
Transcribed Image Text:The label on a portable radio recommends the use of rechargeable nickel-cadmium cells (Nicads), although they have a 1.25 V emf while alkaline cells have a 1.58 V emf. The radio has a 3.30 n resistance. (a) Draw a circuit diagram of the radio and its batteries. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen (b) Calculate the power delivered to the radio (in W) when using NiCad cells each having an internal resistance of 0.0410 0. 2426939394 X W (c) Calculate the power delivered to the radio (in W) when using alkaline cells each having an internal resistance of 0.210 0. w (d) Does this difference seem significant, considering that the radio's effective resistance is lowered when its volume turned up?
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