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    Find the voltage drop across a 13Ω resistor.
    Question

    Find the voltage drop across a 13Ω resistor.

    A.

    14V

    B.

    26V

    C.

    10V

    D.

    40V

    Correct option is B

    Current in the circuit is given by:I=4013+7=2 ANow, voltage across any 13 Ω resistor is given by:V=2×13=26 volts\text{Current in the circuit is given by:}\\I = \frac{40}{13+7} = 2 \, \text{A}\\\text{Now, voltage across any 13 } \Omega \text{ resistor is given by:}\\V = 2 \times 13 = 26 \, \text{volts}​​

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