Why is very less heat generated in long electric cables than in filaments of electric bulbs ?
Why is very less heat generated in long electric cables than in filaments of electric bulbs ?
It is because resistance of filament of electric bulb is much more than that of electric cable.
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Who invented simple battery?
Who invented simple battery?
In a circuit containing two unequal resistors connected in parallel
In a circuit containing two unequal resistors connected in parallel
The equivalent resistance in series combination is
The equivalent resistance in series combination is
An electric bulb rated $220 \,V , 60\, W$ is working at full efficiency.
$(i)$ State the resistance of the coil of the bulb. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown below. $(ii)$ State the rate of conversion of energy in each bulb. $(iii)$ Calculate the total power. $(iv)$ What will be the total power if the bulbs are connected in parallel ?
An electric bulb rated $220 \,V , 60\, W$ is working at full efficiency.
$(i)$ State the resistance of the coil of the bulb. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown below. $(ii)$ State the rate of conversion of energy in each bulb. $(iii)$ Calculate the total power. $(iv)$ What will be the total power if the bulbs are connected in parallel ?
What is the process of depositing a layer of gold on silver called?
What is the process of depositing a layer of gold on silver called?