Consider the circuit given here with the foll | vedclass

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

Question

(A) The current $i$ in the circuit is given by $i = \frac{E}{R + r} = \frac{12}{4 + 2} = \frac{12}{6} = 2\, A$.$1$. Rate of energy loss in the source

Vedclass · Accepted Answer

Rate of energy loss in the source is = $8\, W$

Vedclass · Answer

(A) The current $i$ in the circuit is given by $i = \frac{E}{R + r} = \frac{12}{4 + 2} = \frac{12}{6} = 2\, A$.$1$. Rate of energy loss in the source (internal resistance) is $P_{loss} = i^2 r = (2)^2 	imes 2 = 4 	imes 2 = 8\, W$.$2$. Rate of energy conversion in the source (total power generated) is $P_{gen} = E 	imes i = 12 	imes 2 = 24\, W$.$3$. Power output across the external resistor $R$ is $P_{out} = i^2 R = (2)^2 	imes 4 = 4 	imes 4 = 16\, W$.$4$. Potential drop across $R$ is $V = iR = 2 	imes 4 = 8\, V$.Comparing these with the options,statement $(A)$ is correct.

Consider the circuit given here with the following parameters: $E.M.F.$ of the cell = $12\, V$,internal resistance of the cell = $2\,\Omega$,and external resistance $R = 4\,\Omega$. Which one of the following statements is true?

Similar Questions

Two resistors $400 \, \Omega$ and $800 \, \Omega$ are connected in series across a $6 \, V$ battery. The potential difference measured by a voltmeter of $10 \, k \Omega$ connected across the $400 \, \Omega$ resistor is close to $.... \, V$.

The equivalent resistance of the following infinite network of resistances is

In the given circuit,find the value of resistance $R$ if the current flowing through the circuit is $1 \, A$.

If a high power heater is connected to electric mains,then the bulbs in the house become dim,because there is a

$A$ $100 \ V$ voltmeter having a resistance of $20 \ k\Omega$ is connected in series with a very high resistance $R$. When it is connected to a $110 \ V$ line,it reads $5 \ V$. What is the value of $R$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module