0
A power rating printed on a light bulb assumes a high voltage of 120 V is applied to the bulb if two 100 W bulbs are connected in series to a 120 V source?
well if the bulbs arerated for 110v then 200w but if the bulbs are rated for 220v then only 100w if the bulbs are rated for other voltages then you nedd to do some more calculations.
The total power consumed = 50W.
Calculation:- P=V^2/R
R1=220^2/100
R1=484Ohms.
R2=484Ohms.
R=968Ohms.
I=V/R
I=220/968
I=0.2272A
P=I^2*R
P=(0.2272)^2*968
P=50W.
What else can I help you with?
Why generally the voltage is applied to HV side?
Lower voltages are required if connected to the low voltage side. The testing facility may not have a gen set large enough to test from the high voltage side.
What happens to the applied voltage when a change in circuit resistance occurs?
When a dc supply is connected to a resistor, current flows. The current in amps is equal to the supply voltage divided by the resistance in ohms. The power used is the voltage times the current, and that appears as heat in the resistor, which might become hot to touch.
What happens to voltage in a step-down transformer?
The voltage induced into the secondary winding will be lower than the voltage applied to the primary winding. The primary winding being the winding connected to the supply, while the secondary winding is the one connected to the load.
Why do the voltage drops of an inductor and a lamp in a series ac circuit not equal the applied voltage?
The voltage is greater than the applied voltage, why?
Is induced voltage is always the opposite polarity opposes or subtract from the applied voltage?
Induced voltage is generally described by Lenz's Law, which states that the direction of induced voltage (or current) will be such that it opposes the change in magnetic flux that produced it. This means that when an external voltage is applied, the induced voltage acts in opposition to that applied voltage whenever there is a change in magnetic conditions. However, the total voltage in the circuit is the algebraic sum of the applied voltage and the induced voltage, so it can be seen as subtracting from the applied voltage in terms of net effect.
What is the voltage drop across each phase if a wye connected load has a voltage of 480 v applied to it?
.24
What is the best way to ensure that a 40 watt bulb and a 60 watt bulb have the same voltage applied to them?
Light bulbs connected in parallel automatically have "the same voltage applied to them".
What happens to voltage in a step down?
The voltage induced into the secondary winding will be lower than the voltage applied to the primary winding. The primary winding being the winding connected to the supply, while the secondary winding is the one connected to the load.
Why generally the voltage is applied to HV side?
Lower voltages are required if connected to the low voltage side. The testing facility may not have a gen set large enough to test from the high voltage side.
Connected in series or parallel will each bulb glow brighter?
In parallel, each bulb will have full voltage applied across them. However, in series, the voltage across each bulb won't be the same as supply voltage. Thereby, bulbs connected in parallel will glow brighter.
What is the definition of applied voltage?
Any voltage that is fed into or "applied" to an electrical circuit is referred to as an "applied voltage".
What happens to the applied voltage when a change in circuit resistance occurs?
When a dc supply is connected to a resistor, current flows. The current in amps is equal to the supply voltage divided by the resistance in ohms. The power used is the voltage times the current, and that appears as heat in the resistor, which might become hot to touch.
What happens to voltage in a step-down transformer?
The voltage induced into the secondary winding will be lower than the voltage applied to the primary winding. The primary winding being the winding connected to the supply, while the secondary winding is the one connected to the load.
How is a Load applied to a ac generator?
The load conductor is connected to the load side of the generator breaker. Once the generator is up to speed the load breaker is closed and the voltage is then applied to the load.
Why do the voltage drops of an inductor and a lamp in a series ac circuit not equal the applied voltage?
The voltage is greater than the applied voltage, why?
Why do several 40watt and 220volt lamps not light to full brilliance when in series?
To get full brightness, the rated voltage has to be applied across the bulb. When several bulbs are connected in series, the voltage gets devided among these sevral bulbs and correct rated voltage will not be applied acros each bulb, hence the brightness reduces.
Is induced voltage is always the opposite polarity opposes or subtract from the applied voltage?
Induced voltage is generally described by Lenz's Law, which states that the direction of induced voltage (or current) will be such that it opposes the change in magnetic flux that produced it. This means that when an external voltage is applied, the induced voltage acts in opposition to that applied voltage whenever there is a change in magnetic conditions. However, the total voltage in the circuit is the algebraic sum of the applied voltage and the induced voltage, so it can be seen as subtracting from the applied voltage in terms of net effect.
