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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.
First, this statement stands as long as voltage is constant. If you held the current constant then power would increase as resistance increases.V=IR. For a fixed voltage if you increase the resistance (R) then the current (I) will decrease - following the formula.Power = VI so as the resistance increases the value of VI (power) decreases as V is constant and I gets smaller.Therefore the power is decreasing as the resistance increases (when voltage is held constant).Hope this helps.
There is no such thing as 'resistance across' a load! The correct term is 'resistance of a load'.To answer your question, it depends on how the loads are connected. If they are connected in series, for example, the total resistance is equal to the sum of the individual resistances. If they are connected in parallel, then you must use the following equation: 1/R = 1/R1 + 1/R2 + 1/R3 + etc.For any other connection, you will have to work it out individually.
in a circuit of pure Resistance (r), IE. voltage source (12 v DC battery) and pure resistance (a light bulb). the voltage (v) and current (i) will be in phase. by adding capacitors and/or inductors to the circuit V and I will be pulled out of phase.
The Aztec goals were the following three G's:God,Glory,Gold ,that is the simplest way to remember the Aztec's goals.
It aids captives in meeting basic resistance goals it aids them in meeting basic resistance goals it aids them in meeting basic resistance goals
It outlined the purpose of the following documents.
the resistance of liquid to following is its viscosity.
Which of the following has the lowest resistance
Answer this question… To unite Muslims and Hindus in resistance against British colonialism
_____ allows you to not only make money on your contributions to your TSP account, along with any Government-automatic and matching contributions, but also on the money earned by those contributions.
Some common change management problems that organizations face include resistance from employees, lack of communication, inadequate planning, and unclear goals.
An accountant might have a great number of personal goals. These goals probably include helping the most that they can.
All of the following are goals of FEMA's Diversity Action Plan EXCEPT FOR:
All of the following are goals of FEMA's Diversity Action Plan EXCEPT FOR:
By following his goals.