(a) Explanation Given Info: The power ( P ) of an electric dryer is 4.1 kW , and the supply voltage ( V ) of an electric dryer is 240 V . An electric dryer generally has the copper wire as its interior wire. Refer the table 1, it defines the values of the maximum current ( I max ) for several common sizes of wire with varnished cambric insulation. The diameter of the wire is used by the standard wire gauge. Formula to calculate the power consumed by an electric dryer is, P = V I V is the supply voltage of an electric dryer, I is current in the heating element. Rearrange the equation to find I . I = P V Substitute 4.1 × 10 3 W for P , and 240 V for V to find I (b) To determine The resistance of the dryer’s heating element at its operating temperature. (c) To determine The cost per hour to operate the electric dryer at 11 cents per kWh .

University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)

14th Edition

ISBN: 9780134265414

Author: Hugh D. Young, Roger A. Freedman

Publisher: PEARSON

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Question

Chapter 26, Problem 26.52E

(a)

To determine

The current in the heating element and to check whether the 12-gauge wire large enough to supply the current.

(b)

To determine

The resistance of the dryer’s heating element at its operating temperature.

(c)

To determine

The cost per hour to operate the electric dryer at 11 cents per kWh.

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Chapter 26, Problem 26.51E

Chapter 26, Problem 26.53E

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Chapter 26 Solutions

University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)

Ch. 26.1 - Suppose all three of the resistors shown in Fig....Ch. 26.2 - Subtract Eq. (1) from Eq. (2) in Example 26.6. To...Ch. 26.3 - You want to measure the current through and the...Ch. 26.4 - The energy stored in a capacitor is equal to...Ch. 26.5 - To prevent the circuit breaker in Example 26.14...Ch. 26 - In which 120-V light bulb does the filament have...Ch. 26 - Two 120-V light bulbs, one 25-W and one 200-W,...Ch. 26 - You connect a number of identical light bulbs to a...Ch. 26 - In the circuit shown in Fig. Q26.4, three...Ch. 26 - If two resistors R1 and R2 (R2 R1) are connected...

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The current in the heating element and to check whether the 12-gauge wire large enough to supply the current.

Solution Summary: The author explains that 12-gauge wire is large enough to supply the current in the heating element.

Concept explainers

The current in the heating element and to check whether the 12-gauge wire large enough to supply the current.

The resistance of the dryer’s heating element at its operating temperature.

The cost per hour to operate the electric dryer at 11 cents per kWh.

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Chapter 26 Solutions