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What voltage must be applied to a 6.4-ohm lamp filiment to develop 20 amperes of current t?
I x R = E 20 x 6.4 = 128 Volts
Can current flow both ways through a lamp?
Yes, we use AC (alternating current) in our homes, the current changes direction 120 times a second.
A 2.5 Amperes current flows through a 100W lamp what is the voltage?
The formula you are looking for is E = W/I.
Why choke coil is used in tube light?
To limit the current through the lamp when the gas ionises and conducts.
What is an incandascent lamp?
Your standard light bulb where a filament is heated by a current passing through it. The heated filament then gives off light.
What voltage must be applied to a 6.4-ohm lamp filiment to develop 20 amperes of current t?
I x R = E 20 x 6.4 = 128 Volts
What will happen to the lamp if current decreases?
brightness will decrease
What type of cord is used in a lamp?
Lamps use what is called a power cord. Power cords connect the appliance (in this case, a lamp) to a wall socket and the electrical field causes the filiment in the light bulb to beam.
How does an electric circuit with a battery lamp copper wire and switch work?
The battery provides the current and the energy; the lamp consumes the energy when the current goes through it; the copper wire conducts the current; and the switch lets you close or open the circuit (so that current passes, or doesn't pass, through).
What is the difference between a parallel circuit and a series circuit?
A parallel circuit is one in which there is more than one current path. An example might be several light bulbs in a house, all of which provide a path for electric current. The advantage is that any of the lamps can be turned on or off without affecting the current flow through any other lamp. A series circuit is one in which the current has only a single path through multiple components. An example might be two resistors, one after the other. Both will have the same current through them but they may have varying voltages depending on their resistance. Another example of a series circuit is a houehold lamp and a light switch. When the light switch is open, no current flows through it and therefore, no current can flow through the lamp either. When the switch is closed, current will now flow through the switch and the lamp.
Can current flow both ways through a lamp?
Yes, we use AC (alternating current) in our homes, the current changes direction 120 times a second.
When a lamp is switched off is the electrical current to the light open or closed?
Open and closed does not refer to electrical current or the flow of electricity. Open or closed refers to the state of an electrical circuit. When a lamp is turned on electricity flows through wires, the switch and the lamp; and the circuit is considered closed. When a lamp is switched off the circuit is considered open (or broken) and the flow of electric current is stopped.
A 2.5 Amperes current flows through a 100W lamp what is the voltage?
The formula you are looking for is E = W/I.
Why choke coil is used in tube light?
To limit the current through the lamp when the gas ionises and conducts.
If I have a circuit with four lamps each lamp is individually connected across the circuit so that the same current is not flowing through each lamp What type of circuit is this?
Parallel Parallel
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.
What is best light to shine on a prism?
White light from a Tungsten filiment lamp is best. If you shine a small ray of the white light in one end a rainbow ray should come out the other.
