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    Hi i'm stuck on this question and cant understand the theory behind it could someone please help me?

    Question:

    A pd V is applied across a resistor. Another identical resistor is then connected in
    series with it and the same pd V is applied across the combination.
    Which statement is incorrect?

    A The total resistance is doubled.
    B The pd across one resistor is 2
    V .
    C The current in the resistors is halved.
    D The power dissipated in one resistor is halved.

    So I get why D is the answer. But wouldn't C be incorrect as well? Becuase it says it's connected in series and current isn't shared in series.

    Any help is greatly appreciated thank you!
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    (Original post by assassinjeev22)
    Hi i'm stuck on this question and cant understand the theory behind it could someone please help me?

    Question:

    A pd V is applied across a resistor. Another identical resistor is then connected in
    series with it and the same pd V is applied across the combination.
    Which statement is incorrect?

    A The total resistance is doubled.
    B The pd across one resistor is 2
    V .
    C The current in the resistors is halved.
    D The power dissipated in one resistor is halved.

    So I get why D is the answer. But wouldn't C be incorrect as well? Becuase it says it's connected in series and current isn't shared in series.

    Any help is greatly appreciated thank you!
    I don't thing B is correct either - if the PD across both resistors is V the PD across one of the resistors can't be 2V... have you copied the question incorrectly?

    ---

    C is correct though - the effective resistance of the two resistors in series is the sum of their resistances. if the resistors are equal resistance the 2 in series have double the resistance of one resistor on it's own.
    If the applied PD is the same then current must be halved because I=VR. Doubling R and keeping V the same means I is halved.
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    (Original post by Joinedup)
    I don't thing B is correct either - if the PD across both resistors is V the PD across one of the resistors can't be 2V... have you copied the question incorrectly?

    ---

    C is correct though - the effective resistance of the two resistors in series is the sum of their resistances. if the resistors are equal resistance the 2 in series have double the resistance of one resistor on it's own.
    If the applied PD is the same then current must be halved because I=VR. Doubling R and keeping V the same means I is halved.
    Oh yeah B didnt copy correctly its meant to be V/2. Thank you!
 
 
 
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