Emf

CBSE XII Science Chemistry Electrochemistry

explain

CBSE X Physics Magnetic Effects of Electric Current

what is an electromotive force

 

CBSE X Physics Electricity

what is the difference between potential difference and electromotive force?

CBSE X Physics Electricity

The figure shows a circuit diagram containing 12 cells , each of e.m.f. 1.5 V and internal resistance 0.25 ohm. Calculate : (i) total internal resistance  (ii) total e.m.f  (iii) total external resistance  (iv) reading shown by the ammeter (v) current in 12 ohm and 8 ohm resistors (vi) potential difference across 2.2 ohm resistor  (vi) drop in potential across the terminals of the cell .

NEET1 ALL Class Physics

Q.

ICSE X Physics

A cell supplies a current of 0.6 A through a 2 ohm coil and a current of 0.3 A through an 8 ohm coil.Calcualte the emf and internal resistence of the cell

ICSE X Physics Current Electricity

State the value of emf for a dry cell

JEE Plances JEE (Main) Chemistry Electrochemistry

during finding half cell electrode potential by nernst equation whether cofficent is used as raise to power or not ?

CBSE XII Science Physics

Plot graph for variation of 1 emf with external resistance 2 terminal potential difference with external resistance and 3 terminal potential difference with external resistance

JEE Main Chemistry Redox Reactions and Electrochemistry

  Which of the following will form a cell with highest voltage?   (E0Co2+/Co=−0.28V;E0Ag+/Ag=0.80V) A.    1M Ag+ , 1M Co2+ B.    2M Ag+ , 2M Co2+ C.    0.1M Ag+ , 2M Co2+ D.    2MA Ag+ , 0.1M Co2+

CBSE X Physics

What is the difference between emf ,potential difference and terminal voltage?

NEET NEET Chemistry Redox Reactions and Electrochemistry

Calculate the emf of given cell:- Ag/AgNO3// AgNO3/Ag ; E°Ag+/Ag=0.80V. [AgNO3]1= 0.005M, [AgNO3]2= 0.5M. (1) 1.18V, (2) 0.118V, (3) 2.36V, (4)0.236V

NEET NEET Physics

Calculate emf of the cell

ICSE X Physics

difference between the emf of the cell and terminal voltage  of the cell

CBSE XII Science Physics Current Electricity

A battery of end E and internal resistance r is used in a circuit with a variable external resistance R. Find the value of R for which the power consumed in R is maximum.

CBSE XII Science Chemistry Electrochemistry

3.52 numerical plz

CBSE XII Science Chemistry Electrochemistry

Please answer this question.

CBSE XII Science Chemistry Electrochemistry

For what concentration of Ag+ will the EMF of te given cell be zero at 25 C .If the concentration of Cu2+ is 0.1 M. EoAg+ = 0.80v and Eo Cu2+ = 0.34 V

NEET NEET Chemistry Redox Reactions and Electrochemistry

The cell reaction of a cell is Mg(s) + Cu2+(aq)-----------> Cu(s) + Mg2+(aq). If the standard reduction potentials of Mg and Cu are -2.37 and +0.34V respectively . The emf of the cell is  (a)2.03V  (b)-2.03V (c)+2.71V (d) -2.71V

JEE Main Chemistry Redox Reactions and Electrochemistry

Please answer the following question.

CBSE XI Science Chemistry Redox Reactions and Electrochemistry

Please answer this question.

CBSE XII Science Chemistry Electrochemistry

Please show how this formula is derived.

CBSE XI Science Chemistry Electrochemistry

EMF is responsible for the steady flow of current where is the potential difference is not responsible for the steady flow of current EXPLAIN THESE LINES PLEASE IN DETAIL

CBSE XII Science Chemistry Electrochemistry

Can we predict the reaction only by seeing its EMF even though concentration is 1 Normal and not 1M

NEET NEET Chemistry Redox Reactions and Electrochemistry

⭕Help me in this question....Thanks☺️

ICSE X Physics Current Electricity

What is difference between E.M.F, Terminal Voltage and Voltade drop?  

CBSE X Physics Electricity

sir what is emf

NEET NEET Physics Electromagnetic Induction and Alternating Currents

⭕Please Explain all three cases un details...thanQ 🙂

JEE Main Physics Electromagnetic Induction and Alternating Currents

A circular loop of wire of radius a is placed in a uniform magnetic field, with the plane of the loop perpendicular to the direction of the field. The magnetic field varies according to B(t) =B°+bt calculate   Magnetic flux Induced emf in loop Induced current and its direction  Power dissipated

CBSE XII Science Physics Alternating Current

a horizontal straight wire 10m long extending from east to west is falling with a speed of 5m/s at right angles to the horizontal component of the earth magnetic field 0.30  

NEET NEET Chemistry Redox Reactions and Electrochemistry

CBSE XII Science Physics Current Electricity

in Current electricity, in section batteries and EMF, we studied that,in a battery a internal mechanism exerts forces on the charges of battery... sir can you please explain, how this force drives the charge in a battery and why these forces drive charges in that manner? please explain sir..

CBSE XII Science Physics Electromagnetic Induction

why EMF is induced before current in the experiment dobe by Faraday?

CBSE XII Science Chemistry Electrochemistry

Q. 6. Calculate the emf of the following cell at 298 K Cr(s)/Cr³+ (0.1M)//Fe²+ (0.01M)/Fe(s) [Given: Eºcell = + 0.30 V]

NEET NEET Chemistry Redox Reactions and Electrochemistry

i have a doubt in this question

ICSE X Physics Current Electricity

What is the difference between complete circuit of a cell and circuit connected around the terminals of the cell

CBSE XII Science Chemistry Electrochemistry

How to make simple equations for anode and cathode in standard electrode potential? How to understand their sign if the value of reduction and oxidation in questions?