First slide

Ohm's law

Question

In the circuit shown in fig. the rate of heat produced in the 5 $Ω$ resistor is 20 $J s^{- 1} .$

Easy

A

The current in the 6 $Ω$ resistor is 1 A.
B

The current in the 5 $Ω$ resistor is 2 A.
C

The rate of heat produced in the 4 $Ω$ resistor is 4 $J s^{- 1} .$
D

All of these

Solution

$\begin{array}{l} i^{2} R = 20 \\ i^{2} = 4 \\ i = 2 A \end{array}$
Current in other branch where $R = 10 Ω$
I = 1A
Rate of heat produced in $4 Ω$
$H = i^{2} R = 1^{2} (4) = 4$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App