The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V open-circuit voltage, whereas an alkaline cell has a 1.58-V open-circuit voltage. The radio has a 3.2 0 resistance. Hint a. With a nicad cell, having an internal resistance of 0.04 02, what is the voltage supplied to the radio, if a single nicad cell is used? The voltage supplied to the radio is b. With an alkaline cell, having an internal resistance of 0.2 02, what is the voltage supplied to the radio, if a single alkaline cell is used? The voltage supplied to the radio is V. When the radio has an effective resistance of voltage can be obtained with a nicad cell. V. c. The radio's effective resistance is lowered when its volume is turned up. At what value of radio's resistance does a nicad cell begin to supply a greater voltage to the radio than an alkaline cell? Hint for (c) or smaller, a greater

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The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads),
although it has a 1.25-V open-circuit voltage, whereas an alkaline cell has a 1.58-V open-circuit voltage.
The radio has a 3.2 0 resistance.
Hint
a. With a nicad cell, having an internal resistance of 0.04 02, what is the voltage supplied to the radio, if
a single nicad cell is used?
The voltage supplied to the radio is
b. With an alkaline cell, having an internal resistance of 0.2 , what is the voltage supplied to the
radio, if a single alkaline cell is used?
The voltage supplied to the radio is
The radio's effective resistance is lowered when its volume is turned up. At what value of radio's
resistance does a nicad cell begin to supply a greater voltage to the radio than an alkaline cell?
Hint for (c)
When the radio has an effective resistance of
voltage can be obtained with a nicad cell.
V.
V.
2 or smaller, a greater
Transcribed Image Text:The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V open-circuit voltage, whereas an alkaline cell has a 1.58-V open-circuit voltage. The radio has a 3.2 0 resistance. Hint a. With a nicad cell, having an internal resistance of 0.04 02, what is the voltage supplied to the radio, if a single nicad cell is used? The voltage supplied to the radio is b. With an alkaline cell, having an internal resistance of 0.2 , what is the voltage supplied to the radio, if a single alkaline cell is used? The voltage supplied to the radio is The radio's effective resistance is lowered when its volume is turned up. At what value of radio's resistance does a nicad cell begin to supply a greater voltage to the radio than an alkaline cell? Hint for (c) When the radio has an effective resistance of voltage can be obtained with a nicad cell. V. V. 2 or smaller, a greater
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