Two heater wires of the same dimensions are first connected in series and then in parallel to a source of supply. What will be the ratio of heat produced in the two cases?

Three identical resistors are first connected in series and then in parallel find the ratio of the equivalent resistance in two cases ​

Two conducting wires of the same material and of equal length and equal diameters are first connected in series and then in parallel in an electric circuit. The ratio of heat produced in series and parallel combination would be (a) 1:2 (b)2:1 (c)1:4(d)4:1

n equal resistors are first connected in series and then connected in parallel. What is the ratio of the maximum to the minimum resistance?

Find the ratio of resistances when two heater wires of equal lengths are first connected is series and then in parallel.

Two resistance filaments of same length are connected first in series and then in parallel. Find the ratio of power dissipated in both cases assuming that equal current flows in the main circuit.

An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii are in the ratio of 4/3 and 2/3, then the ratio of the current passing through the wires will be

Two metallic wires of the same material B, have the same length out cross-sectional area is in the ratio 1:2. They are connected (i) in series and (ii) in parallel. Compare the drift velocities of electrons in the two wires in both the cases (i) and (ii) .

Two lamps A rated 100 watt 220 V and B rated 60 watt 220 V are connected in series to electric main supply of 220 V. the ratio of heat produced in lamp A to the lamp B would be

Two cells of emf 1V and 2V and internal resistance 2 ohm and 1 ohm are connected first in series then in parallel. what should be the external resistance in the circuit so that the current through the resistance be the same in the two cases?