Is the anode or cathode longer in LED ?

1 Answer

Answer :

In LED anode terminal is longer and cathode terminal is smaller.

Related questions

Description : Which is the positive terminal anode or cathode?

Last Answer : Anode is positive terminal and cathode is negative terminal.

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 : Do electrons flow from the anode to the cathode?

Last Answer : electrons flow from cathode to anode because the electron has a negative charge and repels from the negatively charged cathode whilst also attracting to the positively charged anode.

Last Answer : SCR turned off when the anode current falls below holding current.

Description : Is an anode positive or negative?

Last Answer : The anode is positively charged electrode.

Description : It is an unidirectional device that blocks the current flow from cathode to anode   (A) SCR (B) PCR (C) VCR (D) DCR

Last Answer : It is an unidirectional device that blocks the current flow from cathode to anode SCR 

Description : Corrosion of a metal occurs at the (a) Anode (b) Cathode (c) Both anode and cathode (d) None of the above

Last Answer : Ans:(a)

Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at eathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Last Answer : (1) Copper at eathode and oxygen at anode. Explanation: Copper is deposited at the cathode and is dissolved at the anode. Consequently the concentration of copper ions in solution remains constant. This can be used as a method of purification of copper as only pure copper is deposited at the cathode

Description : In electro-refining, the pure metal is deposited on – (1) vessel (2) electrolyte (3) cathode (4) anode

Last Answer : (3) cathode Explanation: In electro-refining, the anodes consist of unrefined impure metal, and as the current passes through the acidic electrolyte the anodes are corroded into the solution so ... pure metal onto the cathodes. Electrolytic refining is used to extract impurities from crude metals.

Description : The component labeled 'CR1' in the circuit shown in the illustration __________________. EL-0085 A. varies its anode/cathode polarity depending on 'RL' current B. rectifies the varying voltage from the ... reactance to smooth ripple D. establishes a constant reference voltage for the base of 'Q1'

Last Answer : Answer: D

Description : The device in figure 'B' shown in the illustration will conduct when the ____________. EL-0067 A. base-emitter is forward biased and the collector-base is reverse biased B. anode-cathode is forward ... is reversed biased D. terminal 1-2 is forward biased and the emitter-terminal 1 is reverse biased

Last Answer : Answer: B

Description : The leads of the device in figure 'B' shown in the illustration are named _________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Last Answer : Answer: A

Description : Leads on the device in figure 'B' shown in the illustration are named ____________. EL-0067 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Last Answer : Answer: D

Description : Which of the following statements comparing transistors and vacuum tubes is correct? A. Both transistors and vacuum tubes have a cathode that must be heated to give off electrons. B. A vacuum tube must ... flow. D. The anode of both transistors and vacuum tubes must be heated to give off electrons.

Last Answer : Answer: B

Description : The leads of the device in figure 'A' shown in the illustration are named the _______________. EL-0065 A. source, gate and drain B. emitter, base and collector C. emitter, base 1 and base 2 D. anode, cathode and gate

Last Answer : Answer: C

Description : The input signal of a travelling wave tube is introduced at A. Cathode B. Anode C. Cathode end of the helix D. Collector end of the helix

Last Answer : C. Cathode end of the helix

Description : Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and (A) Moving mercury and graphite (B) Graphite and moving mercury (C) Moving mercury and carbon (D) Moving mercury and crimped steel wire

Last Answer : (B) Graphite and moving mercury

Description : A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent ... . 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

Last Answer : 30 m/s

Description : What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell? (A) Cl2 & Na (B) Cl2 & H2 (C) O2 & H2 (D) Cl2 , H2 & NaOH solution

Last Answer : (D) Cl2 , H2 & NaOH solution

Description : Pick out the wrong statement. (A) The X-rays cannot be deflected by electric field unlike cathode rays (B) The intensity of X-rays can be measured by ionisation current produced due to the ... the anode-cathode voltage (D) Crystal structure of a material can be studied by an electron microscope

Last Answer : (C) The quality of X-rays can be controlled by varying the anode-cathode voltage

Description : Pick out the wrong statement about coating/electroplating of metals. (A) Phosphate coating is used as an excellent base for paints & enamels (B) Phosphate coating is less corrosion resistant than ... coating metal is made the anode (D) Calorising is the process of coating steel with chromium

Last Answer : (D) Calorising is the process of coating steel with chromium

Description : Identify the correct statement with reference to the extractive metallurgy of aluminium. (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 (B) Approximately 80% of ... is immediately vaporised (D) Anode effect sets in when the cryolite concentration goes below 40%.

Last Answer : (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3

Description : Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Last Answer : (a) Copper electrode zinc

Description : In the common dry cell, the zinc atoms are: w) reduced at the cathode x) oxidized at the cathode y) oxidized at the anode z) reduced at the anode

Last Answer : ANSWER: Y -- OXIDIZED AT THE ANODE

Description : In electro-refining, the pure metal is deposited on (1) vessel (2) electrolyte (3) cathode (4) anode

Last Answer : cathode

Description : When a spoon is to be electroplated with nickel the spoon is (1) dipped in a nickel sulphate solution (2) made anode and a pure nickel rod, the cathode (3) made cathode and a pure nickel red, the anode (4) coated with nickel sulphate and dried

Last Answer : made cathode and a pure nickel red, the anode

Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at cathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Last Answer : Copper at cathode and oxygen at anode.

Description : Define cathode and anode.

Last Answer : Cathode: The electrode which is connected to the negative terminal (pole) of a battery is called as cathode. It is a negative electrode.  Anode: The electrode which is connected to the positive terminal (pole) of a battery is called as anode. It is a positive electrode. 

Description : In a thyristor, the magnitude of anode current will:

Last Answer : In a thyristor, the magnitude of anode current will: Not change with any variation in gate current

Description : Anode current in an thyristor is made up of   (A) electrons only (B) electrons or holes (C) electrons and holes (D) holes only

Last Answer : Anode current in an thyristor is made up of electrons and holes 

Description : Draw full bridge & half bridge configuration with common cathode.

Last Answer : Half Bridge Configuration: Full Bridge Configuration: 

Description : What is Cathode ray tube ?

Last Answer : Cathode ray tube (CRT) is a vacuum tube using cathode rays to generate a picture on a fluorescent screen. These cathode rays are in fact the electron beam deflected and modulated, which impinges on a ... tube used to display data in a visual form. Picture tube of a television or computer terminal.

Description : . In a common anode, seven-segment LED display, an individual LED will light if a negative voltage is applied to what element?

Last Answer : The cathode.

Description : How do you know the voltage of an LED?

Last Answer : After connecting led to a DC source we can measure the voltage of led by connecting a voltmeter across it.  But voltage rating of the led is given by the manufacturers. Or we can ... in the market For more doubts connect with me in linkdin [email protected] 

Description : What is the voltage of a red LED?

Last Answer : A red led requires 2v to light. LEDs requires different amounts of voltage ranging between 1.8 and 3.3 depending on the intensity and color of the Led.

Description : Why does DNA move towards the anode in gel electrophoresis? -Biology

Last Answer : answer:

Description : Which action is performed on the anode ?

Last Answer : The oxidation process is completed at the anode.

Description : What is used as an anode in X ray machine ?

Last Answer : Copper is used as an anode in X ray machines.

Description : What is anode ?

Last Answer : An electric gate connected to the negative end of a power source is called an anode. Oxidation occurs at the anode.

Last Answer : Anode াত negatively charged.

Description : A gas P is obtained at anode during the electrolysis of brine. The gas P when treated with excess of `NH_3` released a diatomic gas Q. Find the value

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Description : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. The purpose of adding crylite is :

Last Answer : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. ... . to increase melting point of `Al_(2)O_(3)`

Description : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. What is wrong if anode is made of nickel instant

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Description : Which of the following common element(s) is/are present in the anode mud in elctrolytic refining of copper ?

Last Answer : Which of the following common element(s) is/are present in the anode mud in elctrolytic refining of ... A. Selenium B. Tellurium C. Silver D. Gold

Description : Brine is electrolysed by using inert electrodes. The reaction at anode is_______

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Description : Which of the following prtoducts is not formed at the anode in the hall -Heroult electrolysis process?

Last Answer : Which of the following prtoducts is not formed at the anode in the hall -Heroult electrolysis process? A. `CO_(2)` B. `O_(2)` C. `Cl_(2)` D. `F_(2)`

Description : Brine is electrolysed by using inert electrodes. The reaction at anode is_______

Last Answer : Brine is electrolysed by using inert electrodes. The reaction at anode is_______ A. `Cl^(-)(aq)to(1)/(2)Cl_(2 ... 2)H_(2)(g), E_(Cell)^(otimes)=0.00V`

Description : Oxygen and hydrogen gases are produced at the anode and cathod erespectively during electrolysis of dilute aq. Solution of

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