Which of the following bulb will have high resistance?
By comparing R1 and R2 first bulb, i.e., bulb with rating 60W−220V offers more resistance.
Does wattage affect resistance?
Resistors come in a variety of different ratings based on wattage. As a rule, lower wattage resistors are smaller than higher wattage resistors.
What is the resistance of a 60 W light bulb at 120 V?
240 Ω
Why do light bulbs have high resistance?
One may also ask, why do light bulbs have resistance? Incandescent light bulbs have a small filament which when heated begins to glow and emit light. The reason the filament heats up is because it has a high resistance, which means that as electrons move through the filament, they lose a lot of energy.
Does brightness depend on resistance?
The brightness of a lightbulb is given by its power. P = I2R, and so brightness depends on current and resistance. If the bulbs are identical, they have the same resistance. Therefore, when you are asked to rank the brightness of identical bulbs, you are really being asked to rank the amount of current through each.
Why bulb with higher resistance is brighter?
In short, In series, both bulbs have the same current flowing through them. The bulb with the higher resistance will have a greater voltage drop across it and therefore have a higher power dissipation and brightness.
Does less resistance mean brighter bulb?
An incandescent bulb’s brightness depends on a whole lot on resistance. The higher the resistance to current in the wiring, circuitry, and bulb, the lower will be the current, lower the power, and lower the brightness. Conversely, lower resistance means more brightness.
What happens to the current in the circuit as the resistance increases increasing of bulbs )?
In a series circuit, adding bulbs increases the resistance in the circuit. What changes occur in the current in the circuit as more bulbs are added? Increasing the resistance decreases the current.
What will happen to the current if resistance is doubled while voltage is kept constant?
Answer. The current is inversely proportional to the resistance. This means that with a constant voltage source in the input, then current will decrease in half if resistance is doubled.
What kind of wire has the least resistance?
Silver