What is the relationship between power and current?

2 Answers

Answer :

current  flows  due  to  potential  diffrences,  hence  when  flowing  in  resistive  areas  it  causes  voltage  drop  thus  power  is  dissipated.

Answer :

P = I2R

Where P = power

I = Current

R = Resistance

This the relationship between current and power.

Related questions

Description : What is the relationship between power and resistance?

Last Answer : P = I2R Where P = power I = Current R = Resistance

Description : What is the mathematical relationship between resistance and conductance?

Description : Describe the difference between direct and alternating current.

Last Answer : Direct current is the flow of electricity or charge in one direction..  Alternative current is the flow of charge that doesn't flow in one direction. 

Description : What is the difference between eddy current and hysteresis loss?

Last Answer : Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses

Description : ln HRC fuse the time between cut-off and final current zero is called

Last Answer : ln HRC fuse the time between cut-off and final current zero is called the arcing time

Description : What is the difference between line and phase current?

Last Answer : The currents flows through phase lines is called line voltage and currents flows from phase to neutral line is called phase current

Description : Give the circuit analysis of current source inverter with resistive load. What are the main difference between voltage source inverter and current source inverter?

Last Answer : Current source inverter (CSI): In current source inverter, the output current is independent of load. The input current of current source inverter is constant. Current source converter converts DC input current to ... are connected in parallel. In CSI diodes are connected in series.

Last Answer : In a single phase power factor meter the phase difference between the currents in the two pressure coils is exactly 90°.

Last Answer : The inductive interference between power and communication line can be minimized by transposition of the power line, transposition of the communication line.

Description : When an alternating current passes through an ohmic resistance the electrical power converted into heat is?

Last Answer : When an alternating current passes through an ohmic resistance the electrical power converted into heat is true power.

Description : A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is

Last Answer : Please show the solution for this question

Last Answer : In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be more than full-load current.

Description : About trnsformer

Last Answer : Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer

Description : Draw the Delta connected three phase system showing all the voltages and currents. Write the power equation.

Description : what is the difference between AC and DC current ?

Last Answer : AC is generated using Alternator. DC is generated using DC generator. AC changes its direction periodically. DC do not change its direction periodically. AC have non zero frequency. DC have zero ... Power factor of AC is between 0 and 1. But power factor of DC is always 1.

Description : What's the difference between electronic and electrical

Description : What is the difference between a cable and a conductor?

Description : Describe the difference between an open circuit and a short circuit.

Last Answer : Open circuit means the wire is cut meaning power will not flow and close circuit means wire is not cut and hence power will flow.Short circuit is the same as close circuit

Description : Write any four differences between CT and PT.

Last Answer : CT PT CT corresponds to current transformer PT corresponds to potential transformer CT primary is connected in series with load and secondary winding is connected to a low range ammeter. PT ... ) x PT ratio It is a step-up transformer. It is a step-down transformer

Description : Write difference between absolute & secondary instrument.

Last Answer : Absolute Instrument Secondary Instrument 1. These give magnitude of quantity in terms physical constants of instruments 1. These give reading directly of the quantity at the time of ... Raleigh current balance. 6. Examples - ammeter, voltmeter, amperehour meter, wattmeter etc.

Description : Differentiate between positive and negative feedback.

Last Answer : PARAMETER POSITIVE FEEDBACK NEGATIVE FEEDBACK Overall phase shift 0° or 360° 180° Feedback and input signal Are in phase Are out of phase Input signal ... Increases Input impedance Decreases Increases Output impedance Increases Decreases

Description : Define α & β and derive the relation between (α) &) (β) of transistor.

Last Answer : α : The ratio of output collector current IC to input emitter current IE in the CB configuration is called current gain alpha (α).  β : The ratio of output collector current IC to the input base current IB in the CE configuration is ... ( 1/β) + 1  hence 1/ α = (1+β )/ β  Therefore, α = β /(1+β)

Description : Compare between CB , CE & CC transistor configuration.

Last Answer : Parameter CB CE CC I/P impedance Low Or 50Ω Medium Or 600Ωto 4kΩ High Or 1 MΩ Current Gain Less than or equal to 1 High Highest Voltage Gain Medium Medium Less ... k Ω to 50 k Ω Low Or 50 Ω Phase shift between input and output 0° 360° 0° 

Description : Distinguish between AC and DC.

Last Answer : Particulars Direct Current Alternating Current Definition It is the current whose magnitude and direction do not change with respect to time. It is the current whose ... system, electroplating, Battery charging, Traction. AC machines, Domestic and industrial supply.

Description : Two waves of the same frequency have opposite phase when the phase angle between them is?

Last Answer : Two waves of the same frequency have opposite phase when the phase angle between them is 180°.

Description : What is the difference between an anode and a cathode?

Last Answer : The anode is positively charged electrode and the cathode is negatively charged electrode.

Description : What is the difference between a coil and an inductor?

Last Answer : Inductor is covering with insulating material is called coil.so they differentiate between coil and inductor.

Description : Differentiate between soldering and brazing

Last Answer : Answer: Comparison of brazing and soldering

Description : Compare between Hot rolling and Cold rolling.

Last Answer : Hot rolling Cold rolling  Metal is fed to the rolls after being heated above the recrytallization temperature. Metal is fed to the rolls when it is below the recrytallization temperature. ... Hot rolling is the father of the cold rolling. Cold rolling follows the hot rolling.

Description : State the difference between energy conservation and energy audit. 

Last Answer : energy conservation Energy audit It is reducing the growth of energy consumption by avoiding unnecessary usage of energy It is an inspection, survey & analysis of energy flows ... Various measuring instruments, with proper sensing elements are required for the energy audit. 

Description : What is the difference between relay and contactor?

Last Answer : Relay have smaller ratings. Contactor is a high rating relay.

Description : Coulomb friction is the friction between?

Last Answer : Coulomb friction is the friction between bodies having relative motion.

Last Answer : The insulating material used between the commutator segments is normally mica.

Last Answer : In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.

Last Answer : Discrimination between main and back up protection is provided by the use of relays which are slow.

Last Answer : The interaction between a transmission line and communication line is minimized by transposing transmission as well as communication lines, increasing the height of the transmission line tower, increasing the distance between the two lines.

Last Answer : A differential relay measures the vector difference between two or more similar electrical quantities.

Description : In a transformer the resistance between its primary and secondary should be?

Last Answer : In a transformer the resistance between its primary and secondary should be infinity.

Description : What is the difference between BJT and FET?

Last Answer : BJT  is  a  current  opperated   transistor  while  FET   is  a  field   opperated  transistor.

Description : What is the difference between a soft start and a VFD?