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A heating element using nichrome connect...

A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of the heating element if the room temperature is `27^(@)C` ? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is `1.70xx10^(-4) C^(-1)`.

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A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of the heating element if the room temperature is 27.0^@C ? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1.70 xx 10^(-4) ""^@C^(-1) .

A heating element using nichrome connected to a 115 V supply draws a current of 1.6A which settles after a few seconds to a steady value of 1.4 A. What is the steady temperature of the heating element if the room temperature is 30^@C ? Temperature coefficient of resistance of nichrome averaged over the temperature range involved is 1.7xx10^(-4).^(@)C^(-1) .

Knowledge Check

  • A heating element using nichrome connected to a 230 V supply draws a initial current of 3.2 A which settles after a few seconds to a steady value of 2.8 A. What is the steady temperature of the heating elemtn if the room temperature is 27.0^(@)C ? Temperature coefficient of resistance of nichrome of nichrome averaged over the temperature range involved is 70xx10^(-4)C^(-1)

    A
    `680^(@)C`
    B
    `51^(@)C`
    C
    `920^(@)C`
    D
    `750^(@)C`
  • The resistance of wire in a heater at roo temeperature is 65Oemga . When the heater is connected to a 220V supply the current settles after a few seconds to 2.8A. What is the steady temperature of the wire. (Temperature coefficient of resistance alpha=1.70xx10^(-4) ^(@).C^(-) )

    A
    `955^(@)C`
    B
    `1055^(@)C`
    C
    `1155^(@)C`
    D
    `1258^(@)C`
  • At what temperature will the resistance of a copper wire become three times its value at 0^(@)C (Temperature coefficient of resistance for copper = 4 xx 10^(-3) per C)

    A
    `400^(@) C`
    B
    `450^(@)C`
    C
    `500^(@)C`
    D
    `550^(@)C`
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    A nichrome heating element connected to a 200 V supply draws an intial current of 2.2 A which settles down after a few seconds to a steady value of 2.0 A. Find the steady temperature of the heating element. The room temperature is 30^(@)C and the average temperature coefficient of resistance of nichrome is 1.7xx10^(-4) "per"^(@)C .

    An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it, its resistance at 27 ^(@)C is found to be 73.2Omega . When the toaster is connected to a 230 V supply, the current settles after a few seconds, to a steady value of 2.748 A. What is the steady temperature of the nichrome element? The temperature coefficient of resistance of nichrome averaged over the temperature range involved, is 1.70xx10^(-4)""^(@)C^(-1)

    An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it. It resistance at room temperature (27.0^@C) is found to be 75.3Omega . When the toaster is connected to a 230 V supply, the current settles, after a few seconds, to a steady value of 2.68 A . What is steady temperature of the nichrome element? The temperature coefficient of resistance of nichrome averaged over the temperature range involved , 1.70xx10^-4C^-1

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    The resistance of a heating is 99Omega at room temperature. What is the temperature of the element if the resistance is found to be 11 Omega (Temperature coefficient of the material of the resistor is 1.7xx10^(-4)^(2).C^(-1) )