If length is doubled how does it affect the resistance? halved doubled no change four times. If length is halved how does it affect the specific resistance/resistivity? doubled halved no change four times. If radius is doubled the resistance of conductor would ..... get doubled become four times get halved become1/4 times. In series connection of resistors current in circuit increases decreases remains un affected data provided is not sufficient to answer this question. In parallel connection of resistors potential across each resistor is different but does not depend on resistance of each resistance is same as potential can never get divided potential across each resistor depends upon it's resistance as current is same we cannot decide based on data provided.
