A cell whose e.m.f. is 2, V and internal resi | vedclass

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

Question

(C) The electromotive force $(E)$ of the cell is $2\, V$.The internal resistance $(r)$ of the cell is $0.1\,\Omega$.The external resistance $(R)$ conn

Vedclass · Accepted Answer

$1.95$

Vedclass · Answer

(C) The electromotive force $(E)$ of the cell is $2\, V$.The internal resistance $(r)$ of the cell is $0.1\,\Omega$.The external resistance $(R)$ connected is $3.9\,\Omega$.The total resistance of the circuit is $R_{total} = R + r = 3.9\,\Omega + 0.1\,\Omega = 4.0\,\Omega$.The current $(I)$ flowing through the circuit is given by Ohm's law: $I = \frac{E}{R + r} = \frac{2\, V}{4.0\,\Omega} = 0.5\, A$.The terminal voltage $(V)$ across the cell is given by $V = I 	imes R$.Substituting the values: $V = 0.5\, A 	imes 3.9\,\Omega = 1.95\, V$.

$A$ cell whose e.m.f. is $2\, V$ and internal resistance is $0.1\,\Omega$ is connected with a resistance of $3.9\,\Omega$. The voltage across the cell terminal will be ................ $V$.

Similar Questions

An infinite sequence of resistors is shown in the figure. The resultant resistance between $A$ and $B$ will be,when $R_1 = 1\,\Omega$ and $R_2 = 2\,\Omega$ ............. $\Omega$

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 adjoining circuit,the potential difference across $3\,\Omega$ is ................ $V$.

In the circuit shown in the adjoining figure,the reading of ammeter $A$ is ................ $A$.

The ammeter reading in the following circuit will be .............. $A$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module