The device used to convert solar energy into electricity is – (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell

The device used to convert solar energy into electricity is – (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell
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(1) Photovoltaic cell Explanation: Sunlight is converted into electricity using photovoltaics (PV). A photovoltaic system employs solar panels composed of a number of solar cells to supply usable solar power.
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The device used to convert solar energy into electricity is (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell

Description : The device used to convert solar energy into electricity is (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell

Last Answer : Photovoltaic cell

What is meant by Electrochemical cell . Why is it called as galvanic cell and Voltaic cell ?

Description : What is meant by Electrochemical cell . Why is it called as galvanic cell and Voltaic cell ?

Last Answer : Ans. :- The cell which converts chemical energy into electrical energy . It is called as galvanic cell and Voltaic cell after the name of scientists who first tried to convert chemical energy into electrical energy .

Solar cells work on the principle of – (1) photovoltaic effect (2) photoelectric effect (3) photoconductive effect (4) photosynthesis

Description : Solar cells work on the principle of – (1) photovoltaic effect (2) photoelectric effect (3) photoconductive effect (4) photosynthesis

Last Answer : (1) photovoltaic effect Explanation: Solar cells work on the principle of photovoltaic effect.

Solar cells work on the principle of (1) photovoltaic effect (2) photoelectric effect (3) photoconductive effect (4) photosynthesis

Description : Solar cells work on the principle of (1) photovoltaic effect (2) photoelectric effect (3) photoconductive effect (4) photosynthesis

Last Answer : photovoltaic effect

Write briefly about (a) Shock Waves (b) Sound Barrier (c) Solar Cell (d) Super Fluid (e) Tsunami (f) Photovoltaic Cell (g) Hygrometer

Description : Write briefly about (a) Shock Waves (b) Sound Barrier (c) Solar Cell (d) Super Fluid (e) Tsunami (f) Photovoltaic Cell (g) Hygrometer

Last Answer : (a) Shock Waves In fluid dynamics, a shock wave is a nonlinear or discontinuous pressure wave. It can also be when the actual molecular or particle speed is moving faster than the wave ... . Evaporation from the bulb lowers the temperature so that this thermometer usually shows a lower temperature.

Explain the construction and working of electricity generation through photovoltaic system.

Description : Explain the construction and working of electricity generation through photovoltaic system.

Last Answer : Construction-A photovoltaic (PV) system is a system composed of one or more solar panels combined with an inverter and other electrical and mechanical hardware that use energy from the Sun to generate ... power electronics locally, or be sent on to the electrical grid for use elsewhere.

What is the theoretical limit of the efficiency of a single-crystal single-junction cell in a photovoltaic system? w) 9 percent x) 29 percent y) 79 percent z) 99 percent

Description : What is the theoretical limit of the efficiency of a single-crystal single-junction cell in a photovoltaic system? w) 9 percent x) 29 percent y) 79 percent z) 99 percent

Last Answer : ANSWER: X -- 29 PERCENT

___________ converts electrical energy into chemical energy. a) Galvanic cell b) Voltaic cell c) Electrolytic cell d) Leclanche cell

Description : ___________ converts electrical energy into chemical energy. a) Galvanic cell b) Voltaic cell c) Electrolytic cell d) Leclanche cell

Last Answer : c) Electrolytic cell

What do you call a device that converts solar energy into electricity?

Description : What do you call a device that converts solar energy into electricity?

Last Answer : That's a solar panel.

A device which converts solar energy directly into electricity is called

Description : A device which converts solar energy directly into electricity is called

Last Answer : solar cell.

Solar photovoltaic devices encouraged their use for water . A) Pumping. C) Lighting B) Both A & C. D) None of the above.

Description : Solar photovoltaic devices encouraged their use for water . A) Pumping. C) Lighting B) Both A & C. D) None of the above.

Last Answer : PUMPING

With a neat diagram explain solar photovoltaic power plant.

Description : With a neat diagram explain solar photovoltaic power plant. 

Last Answer : Diagram of solar photovoltaic power plant :  Explanation:  Solar power plant consists of following components:  1. Photovoltaic cell panel: Its function is to convert sunrays directly into DC ... .  5. Step-up transformer: It step-up input voltage to utilization voltage e.g. 230V

What kind of energy is converted into light energy as a result of the action of light on a photovoltaic cell ?

Description : What kind of energy is converted into light energy as a result of the action of light on a photovoltaic cell ?

Last Answer : Answer : The action of light on a photovoltaic cell results in the conversion of light energy into electrical energy.

Why are photovoltaic cell are used to Provide the energy for all of these except?

Description : Why are photovoltaic cell are used to Provide the energy for all of these except?

Last Answer : Feel Free to Answer

Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Description : Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Last Answer : ANSWER: Z -- PHOTONS

Transformer is a device to convert – (1) D.C. to A.C. (2) Low voltage D.C. into high voltage D.C. (3) Low voltage A.C. into high voltage A.C. (4) Mechanical energy into Electrical energy

Description : Transformer is a device to convert – (1) D.C. to A.C. (2) Low voltage D.C. into high voltage D.C. (3) Low voltage A.C. into high voltage A.C. (4) Mechanical energy into Electrical energy

Last Answer : (3) Low voltage A.C. into high voltage A.C. Explanation: A transformer is an electrical device that transfers energy from one circuit to another by magnetic coupling with no moving parts. It converts high volt-age AC into low voltage AC and vice-versa.

Transformer is a device to convert (1) D.C. to A.C. (2) Low voltage D.C. into high voltage D.C. (3) Low voltage A.C. into high voltage A.C. (4) Mechanical energy into Electrical energy

Description : Transformer is a device to convert (1) D.C. to A.C. (2) Low voltage D.C. into high voltage D.C. (3) Low voltage A.C. into high voltage A.C. (4) Mechanical energy into Electrical energy 

Last Answer : Low voltage A.C. into high voltage A.C.

(a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry

Description : (a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry

Last Answer : (a) Fuel cells : These cells are the devices which convert the energy produced during combustion of fuels like H2, CH4, etc. directly into electrical energy. The electrode reaction for H2 – O2 fuel cell : (b) The galvanic cell may be represented as Zn (s) | Zn2+ (1M) || Cu2+ (1M) | Cu (s)

What is Galvanic Cell or Valtic Cell ?

Description : What is Galvanic Cell or Valtic Cell ?

Last Answer : : Galvanic or voltaic cells are those cells where electrical energy is produced by chemical reactions of substances inside the cell. In galvanic cells, usually two electrodes made up of two different ... between the two electrolytic solutions . A U -shaped glass contains a solution of KCl salt.

What is Galvanic Cell ? What is a galvanic cell ?

Description : What is Galvanic Cell ? What is a galvanic cell ?

Last Answer : A galvanic cell is an electrochemical cell in which a chemical reaction occurs spontaneously , that is , no external force is required for the reaction to take place .

What are the half-reactions for galvanic cell with Ni and Mg electrodes?

Description : What are the half-reactions for galvanic cell with Ni and Mg electrodes?

Last Answer : Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-

What reaction occurs at the cathode of a galvanic cell?

Description : What reaction occurs at the cathode of a galvanic cell?

Last Answer : Feel Free to Answer

What is the voltage of a galvanic cell made with silver a d aluminum?

Description : What is the voltage of a galvanic cell made with silver a d aluminum?

Last Answer : Feel Free to Answer

What is oxidized in galvanic cell made with silver and nickel electrodes?

Description : What is oxidized in galvanic cell made with silver and nickel electrodes?

Last Answer : The nickel metal(apex)

What are half reactions for a galvanic cell with Zn and Ni electrons?

Description : What are half reactions for a galvanic cell with Zn and Ni electrons?

Last Answer : What is the answer ?

What is the standard notation of a galvanic cell made with magnesium and gold?

Description : What is the standard notation of a galvanic cell made with magnesium and gold?

Last Answer : Mg(s) | Mg2+(aq) Au+(aq) | Au(s)

What is Galvanic cell ?

Description : What is Galvanic cell ?

Last Answer : A Galvanic cell or voltaic cell or electrochemical cell is a system in which a spontaneous chemical oxidation- reduction occurs and generates electrical energy.

Define the following : Electrochemistry , Electrolyte , Non-Electrolyte , Electrolytic Cell , Galvanic or Voltaic cell , Electrolysis , Hydrolysis & electroplating.

Description : Define the following : Electrochemistry , Electrolyte , Non-Electrolyte , Electrolytic Cell , Galvanic or Voltaic cell , Electrolysis , Hydrolysis & electroplating.

Last Answer : Ans : (a) Electrochemistry : Electrochemistry is the branch of chemistry which deals with such chemical reactions involving the inter-conversion of electrical energy and chemical energy. Example : Batteries , ... should be a solution of the coating metal, such as its metal nitrate or sulfate.

Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have to measure the cell potential to obtain the difference in potential energy because the potential of half-reactions cannot be measured directly. C The direction of a redox reaction can only be determined experimentally. D Half-cell potentials for half-reactions are determined by combining the relevant half-cell with a standardised half-cell.

Description : Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have ... half-reactions are determined by combining the relevant half-cell with a standardised half-cell.

Last Answer : C The direction of a redox reaction can only be determined experimentally. 

Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell

Description : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell  Which of the above are active transducers ?

Last Answer : Consider the following transducers : 1. LVDT 2. Piezoelectric 3. Thermocouple 4. Photovoltaic cell Which of the above are active transducers ? 2, 3 and 4

Is it possible to convert infrared energy into electricity?

Description : Is it possible to convert infrared energy into electricity?

Last Answer : Silicon solar cells can convert the shorter wavelengths of IR to electricity: https://www.solarquotes.com.au/blog/uv-solar-panels/ You can also concentrate solar IR and use the ... .com/innovationtoronto.com/wp-content/uploads/2015/12/Solar-Thermal-Power-Plant_forcetoknow.com_.jpg?resize=627%2C221

What is the name of the device used to convert alternating cur-rent into direct current? (1) Amreter (2) Galvanometer (3) Rectifier (4) Transformer

Description : What is the name of the device used to convert alternating cur-rent into direct current? (1) Amreter (2) Galvanometer (3) Rectifier (4) Transformer

Last Answer : (3) Rectifier Explanation: A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification.

What is the name of the device used to convert alternating current into direct current ? (1) Ammeter (2) Galvanometer (3) Rectifier (4) Transformer

Description : What is the name of the device used to convert alternating current into direct current ? (1) Ammeter (2) Galvanometer (3) Rectifier (4) Transformer

Last Answer : Rectifier

A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic

Description : A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic

Last Answer : (a) LDR

Two half-reactions of an electrochemical cell are given below : MnO–4 (aq) + 8H+ (aq) + 5e– → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e–, E° = + 0.15 V. Construct the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry

Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e- ... the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry

Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → = Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V At cathode (reduction) : MnO-4(aq) + 8H+ ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.

Two half-reactions of an electrochemical cell are given below : MnO–4 (aq) + 8H+ (aq) + 5e– → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e–, E° = + 0.15 V. Construct the redox reaction equation from the two half-reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.

What is Electrochemical Cell ?

Description : What is Electrochemical Cell ?

Last Answer : Electrochemical cell is a type of cell through which electricity can be generated from chemical energy.

In an electrochemical cell where are electrons produced?

Description : In an electrochemical cell where are electrons produced?

Last Answer : at the anode

n electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a – (1) Power transmittor (2) Battery (3) Uninterrupted power supply (UPS) (4) Generator

Description : n electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a – (1) Power transmittor (2) Battery (3) Uninterrupted power supply (UPS) (4) Generator

Last Answer : (3) Uninterrupted power supply (UPS) Explanation: A Galvanic cell, also known as battery, is an electro-chemical cell that derives electrical energy from spontaneous redox reactions taking place within ... produce direct current. A battery is a set of galvanic cells that are connected in parallel.

What would happen if salt bridge is not used in electrochemical cell ?

Description : What would happen if salt bridge is not used in electrochemical cell ?

Last Answer : Ans. :- The cell works for short time .After that electrons stop flowing from anode to cathode due to accumulation of +ve ions at anode and no reduction will occur at cathode . The result is that current stops flowing and cell will not work .

What is the principle of electrochemical cell ?

Description : What is the principle of electrochemical cell ?

Last Answer : Ans .:- The cell works on the principle of redox reactions . One of the reactant undergoes oxidation while another undergoes reduction

The cathode in an electrochemical cell always carries (A) Negative charge (B) Positive charge (C) Zero charge (D) Positive or negative charge depending upon the nature of the cell

Description : The cathode in an electrochemical cell always carries (A) Negative charge (B) Positive charge (C) Zero charge (D) Positive or negative charge depending upon the nature of the cell

Last Answer : (A) Negative charge

Why cation present below in electrochemical series can discharge before the elements present above them in an electrochemical cell?

Description : Why cation present below in electrochemical series can discharge before the elements present above them in an electrochemical cell?

Last Answer : Ans: This is because their ability to be reduced (reduction potential) is more than the cation present above them in electrochemical series. So they take electrons before the other cations and get discharged.

What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Description : What is the purpose of the salt bridge in an electrochemical cell? w) It allows ion migration. x) It allows electron flow. y) It prevents ion migration. z) It prevents electron flow.

Last Answer : ANSWER: W -- IT ALLOWS ION MIGRATION

An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : (1) Power transmittor (2) Battery (3) Uninterrupted power supply (UPS) (4) Generator

Description : An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : (1) Power transmittor (2) Battery (3) Uninterrupted power supply (UPS) (4) Generator

Last Answer : Battery

How is solar energy converted into electricity?

Description : How is solar energy converted into electricity?

Last Answer : Solar energy is converted into electricity by using the principle of photo voltaic effect and device called solar cell.

In the process of photosynthesis, green plants convert solar energy into chemical energy and first bind to which organic compound ?

Last Answer : Green plants convert solar energy into chemical energy in the process of photosynthesis and first bind ATP, NADPH in organic compounds.

Why do electrons transfer from zinc rods to copper rods in galvanic cells ?

Description : Why do electrons transfer from zinc rods to copper rods in galvanic cells ?

Last Answer : Zinc rods and zinc sulphate solutions are used at the anode of galvanic cells and copper rods and copper sulphate solutions are used at the cathode. Zinc acts as an antidote and copper as an oxidizer, ... . Thus , electrons are transferred from the zinc bar to the copper bar in the mentioned cell.

(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 plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

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

Galvanic corrosion cannot be prevented by (A) Cathodic protection (B) Anodic protection (C) Usage of largest possible anodic area (D) Any one of these

Description : Galvanic corrosion cannot be prevented by (A) Cathodic protection (B) Anodic protection (C) Usage of largest possible anodic area (D) Any one of these

Last Answer : Option B