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    A 2200 W electric toaster operates at 220 V. The resistance of its coil is:
    Question

    A 2200 W electric toaster operates at 220 V. The resistance of its coil is:

    A.

    44 Ω

    B.

    22 Ω

    C.

    88 Ω

    D.

    11 Ω

    Correct option is B

    To find the resistance of the coil, we can use the formula derived from Ohm's law and the power formula:
    P=V2RP = \frac{V^2}{R}​​
    Where:
    · P is the power (2200 W),
    · V is the voltage (220 V),
    · R is the resistance (which we need to find).
    Rearranging the formula to solve for R:
    R=V2PR = \frac{V^2}{P}​​
    Substituting the given values:

    R=22022200R= \frac{220^2}{2200}

    R=484002200=22 Ω R = \frac{48400}{2200} = 22 \, \Omega​​​
    So, the resistance of the coil is 22 Ω.
    Thus, the correct answer is (b) 22 Ω.

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