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VW as in Volkswagen I suppose...
The resistance of an incandescent(glow wire) bulb depends on the power - the wattage.
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What is the resistance of a 120-W incandescent lamp connected to a 120-V power supply?
The formula you are looking for is R = E squared/W
Which has a higher resistance a 5w lamp bulb or a 25w lamp bulb and how many times?
As per the formula for power (Power (Watt) = Voltage (V) x Current (i) & Resistance (R) = V / i), 25w lamp bulb would have higher resistance compared to that of 5w lamp bulb.
When a 100w 100v bulb is connected in series with a 40w 100v bulb and 200v supply is given what happens?
40W Bulb will spiol due to over current passing through its coilAnswerSince the 40-W lamp has a higher resistance than the 100-W lamp, the greater voltage drop will appear the 40 W lamp. As a result the 40 W lamp will be subjected to a voltage beyond its 100-V rating, and the 100-W lamp will be subjected to a voltage below its 100-V rating. Therefore, the 40-W lamp will burn much more brightly than the 100-W lamp.Incidentally, the symbols for the 'watt' and 'volt' are upper, not lower, case: W and V.
How much current flows through a lamp with a resistance of 60 Ohms when the voltage across the lamp is 12 V?
The relation between resistance R, Current I and voltage V is: R= V/I Therefore: 60 = 12 / I <=> I = 12 / 60 = 0.2 amp
1 A current of 0.88 A flows through a lamp when it is connected in series with a 6 V battery What is the resistance of the lamp?
The formula you are looking for is R = E/I. Resistance is stated in ohms.
A lamp having a resistance of 10 OHM is connected across 18 V battery. What is the current through the lamp?
Current = Voltage/Resistance Current = 18/10 = 1.8 A
What is the amps of a 60watt bulb?
The amps times the volts equals the watts. A 120 v 60 w lamp takes ½ amp, while a 240 v 60 w lamp takes ¼ amp
When a 12 V battery ie a battery of EMF 12 V is connected across a lamp with a resistance of 6.8 ohms the potential difference across the lamp is 10.2 V Find the current through the lamp?
The idea is to use Ohm's Law (V=IR). In this case, the relevant voltage is the 10.2 V across the lamp.
Are bulbs brighter in a series or parallel curcuit?
It depends! If you have, say, two 100-W/120-V lamps, you could connect them in parallel across a 120-V supply, or in series across a 240-V supply, in which case they would be equally bright for both connections. If, on the other hand, you had a 100-W/120-V lamp and a 60-W/120-V lamp and connected them in parallel across a 120-V supply then they would operate at their normal rated brightness, but if you connected them in series across a 240-V supply, the 60-W lamp will be much brighter and the 100-W lamp would be much dimmer!
The resistance of a 110 volt100 watt lamp is?
The formula you are looking for is R = E(sq)/W.
What is the resistance of a 120-volt lamp draws 0.25 amperes of current?
v/i=r so 120/0.25=480 480 ohms is the resistance
Why does a 25 watt bulb glow brighter than 60 watt in a series circuit?
Because the filament of a 25-W lamp has a higher resistance than that of a 60-W lamp and, therefore, will experience a greater voltage drop -the lamp with the voltage drop closer to its rated voltage (in this case, the 25-W lamp) will be the brighter.
