1. Tardigrade
  2. Question
  3. Physics
  4. In the circuit shown in figure the heat produced in the 5Ω resistor due to the current flowing through it is 10 cal/s. The heat generated in the 4Ω resistor is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. In the circuit shown in figure the heat produced in the $5\Omega$ resistor due to the current flowing through it is 10 cal/s.
The heat generated in the $4\Omega$ resistor isPhysics Question Image

IIT JEEIIT JEE 1981Current Electricity

Solution:

Since, resistance in upper branch of the circuit is twice the
resistance in lower branch. Hence, current there will be half
$P_4=(i/2)^2(4) \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, \, (p=i^2R)$
$P_5 = (i)^2(5)$
or $\, \, \, \, \, \, \, \, \, \, \, \frac{P_4}{P_5} = \frac{1}{5}$
$P_4 = \frac{P_5}{5} = \frac{10}{5} = 2 \, cal/s$
$\therefore \, $Correct option is (b)

Solution Image Solution Image