Two identical resistors, each of resistance `15ohm` are connected in (i) series and (ii) parallel, in turn to battery of 6V. Calculate the ratio of the power consumed in the combination of resistors in each case.

Fourteen identical resistors, each of resistance r each connected as shown in figure. Pick the incorrect alternative(s)

Three identical cells each of emf 2 V and internal resistance 1 Omega are connected in series to form a battery. The battery is then connected to a parallel combination of two identical resistors, each of resistance 6 Omega Find the current delivered by the battery.

Two 220 volt, 200 W bulbs are connected first in series and then in parallel. Each time the combination is connected to 220 V. The ratio of power drawn by the combination in respective cases is

Two identical capacitors of 12 pF each are connected in a series across a battery of 50V. How much electrostatic energy is stored in the combination ? If these were connected in parallel across the same battery , how much energy will be stored in combintion now ? Also find the charge drawn from the battery in each case.

Resistance n , each of r ohm , when connected in parallel give an equivalent resistance of R ohm . If these resistances were connected series, the combination would have a resistance in ohm, equal to

Two resistors R_1 and R_2 of resistance 3 Omega and 6 Omega respectively are connected in parallel across a battery of p.d. 12 V. Draw the circuit diagram. Calculate the electrical energy consumed in 1 minute in each resistance.

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

When two identical batteries of internal resistance 1Omega each are connected in series across a resistor R, the rate of heat produced in R is J_1 . When the same batteries are connected in parallel across R, the rate is J_2= 2.25 J_1 then the value of R in Omega is

If two identical heaters each rated as (1000 W, 220V) are connected are connected in parallel to 220 V, then the total power consumed is .

Two 220 V,100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 V AC supply line. The power drawn by the combination in each case respectively will be :