A 25W and a 100W bulb are joined in series and connected to the ac mains .Which bulb will glow brighter?
1.Define kilowatt.
2.What do you mean by power rating of an electrical appliance?how do you use it to calculate the resisiance of the appliance and the safelimit of current in it,while in use.
3.two lamps,one rated 220 V,50 W and the other rated 220 V,50 W,are connected in series with mains 220 V .explain why does the 50 W lamp consume more power.
now numericals;
1.A bulb is connected to a battery of p.d 4 V and internal resistance 2.5 ohms .a steady current of 0.5 A flows through the circuit .Calculate:-
i)the energy dissipated in th bulb in 10 minutes.
2.a battery of e.m.f 15 V and internal resistance 2 ohm's is connected to resistor's 4 ohm's and 6 ohm's joined (a) series (b)in parallel.find in each case the electrical energy spent per minute in 6 ohm's resistors.
What purpose is served by the terminals of a three way plug?
what is ring system of household wiring
In Mrs. Pinto’s flat there are 6 bulbs of 100 W each, a heater of 2 kW and 5
why do v get an electric shock when v touch an open live wire without slippers on or any other insulation beneath our feet ??? i mean that wht such thingzz happen when v touch a bare live so tht v get a shock !!!
how does the surface area of eletrodes affect internal resistance of a cell?
a wire of 3 ohm resistance and 10 cm lenght is stretched to 30 cm lenght . assuming that it has a uniform cross section , what will be its new resistence?
Calculate the electrical energy in SI units consumed by a 100W bulb and 60W fan connected in parallel for 5 minutes.
why is the earth wire made longer and thicker?
explain earthing.
What are the advantage and disadvantage of industrial revolution?
explain transmission of electric power from generating station to home
What is meant by the reading of the ammeter? How to calculate it?
You have two electric bulbs one of 100W and another of 500W .Which will glow brighter in
1.Series Combination
2.Parallel Combination
Explain with reason.
A 25W and a 100W bulb are joined in series and connected to the ac mains .Which bulb will glow brighter?
1.Define kilowatt.
2.What do you mean by power rating of an electrical appliance?how do you use it to calculate the resisiance of the appliance and the safelimit of current in it,while in use.
3.two lamps,one rated 220 V,50 W and the other rated 220 V,50 W,are connected in series with mains 220 V .explain why does the 50 W lamp consume more power.
now numericals;
1.A bulb is connected to a battery of p.d 4 V and internal resistance 2.5 ohms .a steady current of 0.5 A flows through the circuit .Calculate:-
i)the energy dissipated in th bulb in 10 minutes.
2.a battery of e.m.f 15 V and internal resistance 2 ohm's is connected to resistor's 4 ohm's and 6 ohm's joined (a) series (b)in parallel.find in each case the electrical energy spent per minute in 6 ohm's resistors.
What purpose is served by the terminals of a three way plug?
what is ring system of household wiring
In Mrs. Pinto’s flat there are 6 bulbs of 100 W each, a heater of 2 kW and 5
why do v get an electric shock when v touch an open live wire without slippers on or any other insulation beneath our feet ??? i mean that wht such thingzz happen when v touch a bare live so tht v get a shock !!!
how does the surface area of eletrodes affect internal resistance of a cell?
a wire of 3 ohm resistance and 10 cm lenght is stretched to 30 cm lenght . assuming that it has a uniform cross section , what will be its new resistence?
Calculate the electrical energy in SI units consumed by a 100W bulb and 60W fan connected in parallel for 5 minutes.
why is the earth wire made longer and thicker?
explain earthing.
What are the advantage and disadvantage of industrial revolution?
explain transmission of electric power from generating station to home
What is meant by the reading of the ammeter? How to calculate it?
You have two electric bulbs one of 100W and another of 500W .Which will glow brighter in
1.Series Combination
2.Parallel Combination
Explain with reason.