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Three 15 ohm resistors are connected in parallel to a 30 volt battery What is the equivalent resistance through the circuit?
You don't need the voltage to calculate that. Just use the product-over-sum formula (for two resistors): R = (R1 x R2)/(R1 + R2) Where R is the equivalent resistance, and R1 and R2 are the individual resistances.
What is the use of resistance box?
The use of a resistance box or a "Decade Box" is to help calibrate instruments used to measure electrical values such as Voltage, Current, and Resistance. Without them you would not have a known value of resistance to use as a set point.
How do you wire receptacles in series?
Receptacles are not wired in series. Receptacles are actually wired in parallel, what this means is that all phase wires (black) in a receptacle's box should terminate to the brass screws on each device, and all neutral (white) wires in the box should terminate on the silver screws on each device.
How do you calculate resistance box for slip ring motor?
To calculate the resistance for a slip ring motor, there is an equation that must be solved. This is Torque = S/R. S is the slip of the motor and R is the resistance of the motor.
What is the composition of a resistance box?
A resistance box typically consists of a series of resistors arranged in a specific configuration to provide a range of resistance values for testing and calibration purposes. The resistors can be made from materials such as carbon, metal film, or wire-wound elements, and they are usually housed in a sturdy, insulated enclosure. The box features a set of switches, knobs, or terminals that allow users to select or combine different resistances as needed. This device is commonly used in laboratories and educational settings for experiments involving electrical circuits.
Three resistors having a value of 10 omes each are connected in series to a 300 volts power source what is the total resistance of this circit?
Three resistors having a value of 10 ohms each, when connected in series, have a total effective value of 30 ohms, even if they're wrapped in tissue, stuffed into a box, and stored in the back of your sock drawer. What, if anything, they're connected to makes no difference. If you take the series string of three resistors out of the box and connect it to the terminals of a 300-volts power source, then the string will conduct a current of 10 Amperes. Each resistor will dissipate 1,000 watts and heat rapidly, until the first one either melts or explodes, whereupon the series circuit will open and the flow of current will cease.
Why rotor contactor in external resistance of slipring motor connected in delta?
rotor contactor are used to cut the resistance in slip-ring motor connected through resistance box. resistance is proportional to torque. so by controlling rotor contactor resistance can be controlled and hence torque can be controlled. for more information check torque and speed characteristic of wound motor.
What is the difference between resistance box rheostat and resistor?
A resistance box is a device that contains a set of fixed resistors that can be connected in various combinations to achieve different resistance values. A rheostat is a variable resistor that can be adjusted to change the resistance in a circuit. A resistor is a general term for a component that resists the flow of electrical current in a circuit and comes in fixed resistance values.
What is the purpose of resistance box?
it is used for prevention of over flow of current and for maintaining irrespective regulationAnswerA resistance box is a piece of laboratory equipment consisting of an electrically-insulated box, containing a number of resistors which can be connected, externally, via a pair of terminals. The resistance can be adjusted in fixed amounts by inserting or removing metal pegs into a slotted bar; this arrangement either adds or removes the fixed resistors into the circuit.
What is the of resistance box?
it is used for prevention of over flow of current and for maintaining irrespective regulationAnswerA resistance box is a piece of laboratory equipment consisting of an electrically-insulated box, containing a number of resistors which can be connected, externally, via a pair of terminals. The resistance can be adjusted in fixed amounts by inserting or removing metal pegs into a slotted bar; this arrangement either adds or removes the fixed resistors into the circuit.
What is high resistance box?
a box which has resistance between 1 ohm to 50000 ohm
What is a circuit breaker connected in?
it is connected in a box
How many parallel sides does a cereal box have?
It has three parallel sides. ;)
Three 15 ohm resistors are connected in parallel to a 30 volt battery What is the equivalent resistance through the circuit?
You don't need the voltage to calculate that. Just use the product-over-sum formula (for two resistors): R = (R1 x R2)/(R1 + R2) Where R is the equivalent resistance, and R1 and R2 are the individual resistances.
How many parallel faces does a tissue box have?
A standard tissue box typically has three pairs of parallel faces. The top and bottom faces are parallel to each other, while the four side faces also form two pairs of parallel faces. Thus, in total, there are six parallel faces on a standard tissue box.
What is the use of resistance box?
The use of a resistance box or a "Decade Box" is to help calibrate instruments used to measure electrical values such as Voltage, Current, and Resistance. Without them you would not have a known value of resistance to use as a set point.
Are home appliances part of a circuit?
If you mean any domestic home which has appliances connected to a mains electrical supply, each applicance is connected to one "leg" of the supply in parallel with other appliances. For instance a table lamp, a television and a music center might all be plugged into one leg of the supply. They are not connected to it in series, they are connected in parallel. Similarly the ceiling lights for each floor of your house will be connected to the mains supply in parallel. It is of course possible to connect certain simple things such as light bulbs in series and connect them to the supply. That would then be a small series circuit. If two normal lamps were wired in series each would get only half the supply voltage so they would not glow very brightly. Some other lights which are usually connected in series are lamps to decorate houses or trees at holiday times. These glow brightly because they each need a low voltage. For instance if your house supply is 120 Volts you could use twenty 6 volt bulbs in series, or forty 3 volt bulbs. Or 80 1.5 volt bulbs! and then you go BOOM! and die. and then nobody will miss you. and have a party. and so does everybody else.
