A voltmeter of very high resistance is connec | vedclass

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

Question

(A) The two $8 \ \Omega$ resistors are connected in parallel to each other.Their equivalent resistance $R_{eq}$ is given by:$R_{eq} = \frac{8 	imes 8

Vedclass · Accepted Answer

$6$

Vedclass · Answer

(A) The two $8 \ \Omega$ resistors are connected in parallel to each other.Their equivalent resistance $R_{eq}$ is given by:$R_{eq} = \frac{8 	imes 8}{8 + 8} = \frac{64}{16} = 4 \ \Omega$The total resistance of the circuit is:$R_{total} = 6 \ \Omega + 4 \ \Omega = 10 \ \Omega$The current $I$ flowing through the circuit is:$I = \frac{V_{source}}{R_{total}} = \frac{10 \ V}{10 \ \Omega} = 1 \ A$The voltmeter is connected across the $6 \ \Omega$ resistor. Since the voltmeter has a very high resistance,it does not draw significant current,and the voltage across the $6 \ \Omega$ resistor is:$V = I 	imes R = 1 \ A 	imes 6 \ \Omega = 6 \ V$

$A$ voltmeter of very high resistance is connected in the circuit as shown in the figure. The voltage shown by this voltmeter will be . . . . . . . (in $V$)

Similar Questions

In an experiment on a circuit as shown in the figure, the voltmeter shows $8 \,V$ reading. The resistance of the voltmeter is,

$A$ cell of constant $e.m.f.$ is connected first to an external resistance $R_1$ and then to an external resistance $R_2$. If the power consumed in both cases is the same,what is the internal resistance of the cell?

The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated $220\,V$ and $100\,W$ is connected to a $(220 \times 0.8)\,V$ source,then the actual power consumed would be:

In an experiment, a graph was plotted of the potential difference $V$ between the terminals of a cell against the circuit current $i$ by varying the load rheostat. The internal conductance of the cell is given by:

Find the voltage $V_2$ across $R_2$ for the given circuit. (in $V$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module