Power | Power Across Bulbs

Power generated across a uniform wire connected across a supply is H . If the wire is cut into n equal parts and all the parts are connected in parallel across the same supply, the total power generated in the wire is

Assertion : In lower combination of electric bulbs the bulb of lower power emit more light than that of highest power bulb Reason : The power power bulb in series gets more of higest power bulb

Two bulbs consume the same power when operated at 200 V and 300 V respectively. When these bulbs are connected in series across a DC source of 400 V, then the ratio of power consumed across them is

A series circuit consists of three bulbs connected to a battery as shown. When switch S is closed, what happens to (a) Power consumed in bulb X and Y (b) Power consumed in bulb Z (c ) the current in the circuit (d) the voltage drop across three bulbs and (e) the power consumed in circuit?

Electric Power in Battery and Resistance|| Bulb Rated Voltage|| power|| Brightness OF Bulb in Combination

3 identical bulbs are connected in series and these together dissipate a power P . If now the bulbs are connected in parallel, then the power dissipated will be

Power dissipated across the 8 Omega in the circuit shown here is 2 W . The power dissiated in watt units across the 3 Omega is

If the current in a electric bulb drops by 2% then the power decreases by

Three 60 W , 120 V light bulbs are connected across a 120 V power lines as shown in Fig. 7.26 . Find (a) the voltage across each bulb and (b) the total power dissipated in the three bulbs.