If the mass deposited in 30 s is m,what will | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The charge $Q$ passed through the voltameter is equal to the area under the $i-t$ graph.$Q = 	ext{Area of the trapezium} = \frac{1}{2} 	imes (

Vedclass · Accepted Answer

$\frac{m}{2}$

Vedclass · Answer

(B) The charge $Q$ passed through the voltameter is equal to the area under the $i-t$ graph.$Q = 	ext{Area of the trapezium} = \frac{1}{2} 	imes (	ext{sum of parallel sides}) 	imes 	ext{height}$$Q = \frac{1}{2} 	imes (10 + 30) 	imes 100 	imes 10^{-3} \, A \cdot s = 2 \, C$.According to Faraday's law of electrolysis,the mass $m$ deposited is given by $m = z \cdot Q$,where $z$ is the $E.C.E$ (Electrochemical Equivalent).Therefore,$z = \frac{m}{Q} = \frac{m}{2}$.

If the mass deposited in $30 \ s$ is $m$,what will be the $E.C.E$ of the copper voltameter?

Similar Questions

Three light bulbs of $40\, W$,$60\, W$,and $100\, W$ are connected in series with a $220\, V$ source. Which one of the bulbs will glow brightest?

$A$ cell of emf $6\, V$ and internal resistance $0.5\, \Omega$ is short-circuited. The current in the cell is ............... $A$.

For the circuit shown in the figure,calculate the resistance between the points $A$ and $B$.

The storage battery of a car has an $emf$ of $12\; V$. If the internal resistance of the battery is $0.4\; \Omega,$ what is the maximum current (in $A$) that can be drawn from the battery?

In the circuit shown in the figure,the currents in different branches and the value of one resistor are given. Then,the potential at point $B$ with respect to point $A$ is $.......V$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module