Combination OF Resistance

(a) what is meant by series and parallel combination of resistances ? (b) in which case, series combination or parallel combination, the combined resistance is less than any of the individual resistances ? (c ) How should two resistance of 2 Omega each be connected so as to produce an equivalent resistance of 1 Omega ? In the circuit diagram given here , find: (i) total resistance of the circuit (ii) total current flowing in the circuit, and (iii) the potential difference across R_(1)

Show with the help of diagrams, how you would connet three resistors each of resistance 6 Omega , so that the combination has resistance of (i) 9Omega (ii) 4Omega .

A carbon and an aluminimum wire are connected in series.If the combination has resistance of 27 ohm at 0^(@)C ,what is the resistance of each wire at 0^(@)C so that the resistance of the combination does not change with temperature ? [alpha_(C ) = -0.5 xx 10^(-3)(.^@C)^(-1) and alpha_(A) = 4 xx 10^(-3)(.^@C)^-1] .

Combination OF resistor:-infinite network||resistance OF continuous conductors

A carbon and an aluminium wire are connected in series. If the combination has resistance of 30Omega at 30^@C , what is the resistance of each wire at 0^@C so that resistance of the combination does not change with temperature. (a_c=-0.5 times 10^-3//^@C,a_A=4 times 10^-3//^@C )