MCAT Question of the Day
    •

    Q:

    		 A resistor is placed in a circuit with a battery of voltage V. The resistance of the resistor is R. If the resistor is replaced with a resistor with twice the diameter, twice the length, and the voltage is doubled, what is the new resistance of the resistor?
    		 

    A

    		 8R

    B

    		 4R

    C

    		 R/4

    D

    		 R/2



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