Question

define emf its si unit and dimensional formula​

Answer 1

Answer:

The Correct Answer is given below

Explanation:

When no current flows, the electromotive force (EMF) is equal to the terminal potential difference. Although both EMF and terminal potential difference (V) are measured in volts, they are not the same. The quantity of energy (E) provided by the battery to each coulomb of charge (Q) flowing through is referred to as the EMF ().

The SI unit volt, which is equivalent to a joule per coulomb, is used in emf, as it is in other measures of energy per charge.

The dimensional formula of EMF (Electromotive Force) is given by,

$M^{1} L^{2} T^{-3} I^{-1}$

Where,  

M = Mass

I = Current

L = Length

T = Time

Answer 2

Answer:

Electromotive force it is the electric potential which produced either by the electrochemical cell or by the changing of the magnetic field.

Explanation:

The common acronym used for the electromotive force is EMF.

The symbol for the electromotive force is ε.

The Formula for the electromotive force is ε$= V+Ir$.

Where,

V is the voltage cell

I is the current passing across the circuit

r is the internal resistance

ε is the electromotive force