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Why should the connecting wires in a bulb be of low resistance?
This is to avoid energy losses in the connecting wires.
Why does the resistance of a filament bulb depend on the current in the bulb?
The resistance of a piece of wire changes with temperature. In a filament bulb the wire is heated to about 3000 degrees C so a large change in resistance can be expected. A 240 v 105 w halogen bulb has a cold resistance of 35 ohms, but when running its resistance is 549 ohms.
A 9.0 volt battery connected to bulb. if a current of 0.25 Amps flows through bulb what is the resistance of bulb?
V = IR Voltage = Current * Resistance so 9 = 0.25 * R Hence R =36 Ohms
How much volts to operate 9watt UV bulb?
That all depends in the resistance of the filament in the bulb there is not enough info in the question
What is the resistance value for LED bulb in 12v DC circut?
48 ohms
Which has the thickest filament - a high-resistance or a low-resistance bulb?
A low resistance bulb has a thicker filament.
If a Christmas lights filment breaks how would you connect it again?
Theres no way without breaking the bulb
If a Christmas lights filment breaks how would you fix it again?
Theres no way to do it without breaking the bulb
Why should the connecting wires in a bulb be of low resistance?
This is to avoid energy losses in the connecting wires.
What is the resistance of a fuse bulb?
A lamp has two resistances: a 'hot' resistance (its operating resistance) and its 'cold' resistance (its resistance when switched off), and the hot resistance is significantly higher than its cold resistance.You can calculate its 'hot' resistance from its rated power and its rated voltage (assuming that it is being supplied at its rated voltage), by manipulating the following equation, to make Rthe subject: P= V2/RYou will, though, have to measure its cold resistance.
What happens to the resistance of the bulb as the current passing through it increases?
Yes but very slightly,because temperature coefficient of bulb element is very low.
What gives a switch the power to turn light on and off?
The switch its self has no power. When you flip the switch it connects the circuit allowing electricity to flow through to the light bulb. The lightbulb works by creating resistance(the filment) which gives off energy in the form of heat and light. So what gives it power is you :).
Were is the filment on the flower?
it is the part of that flower
What is cold resistance?
That is e.g. the resistance of a cold bulb before the bulb is lighted and heats up.
What gives the biggest resistance 3 volt bulb or 6 volt bulb?
3 volt bulb gives the biggest resistance
Is a bulb dimmer when the wire is longer?
The resistance of a wire is proportional to its length so increasing the length would increase the resistance of the wire. The higher the resistance of a wire the lower the voltage will be across the bulb so theoretically, the bulb will be somewhat dimmer.However, the resistance of a wire is extremely low compared to that of the light bulb. Electrical wiring is designed and installed so that the wire resistance is insignificant compared to the resistance of the load, such as the bulb. In a well planned wiring system, it will be impossible to see any difference in brightness in bulbs regardless of their location in the electrical circuit. In most cases, it will require very sensitive measuring equipment to detect any difference at all.
What does a light bulb have?
The resistance of a light bulb varies, depending on the type of bulb, the power rating, and the temperature. A typical incandescent 60 watt bulb, for instance has a cold resistance of about 30 ohms, and a hot resistance of about 240 ohms.
