Question

an electric lamp whose resistance is 20 ohm and and conductor of 4 ohm resistance are connected to a battery of 6 volt calculate total resistance current through circuit potential difference across the electric lamp of a conductor is circuit connected in series

Answer 1

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Answer 2

Total Resistance of circuit is 24 ohm in which the potential difference of 5 V is across electric lamp of conductor

Solution:

Given:

Voltage of battery, i.e. V = 6 V

Resistance of electric lamp, i.e. $R_{1}$ = 20 ohm

Resistance for the conductor connected in series = $R_{2}$ = 4 ohm

Total Resistance R =$R_{1}+R_{2}$ = 20 + 4 = 24  

As we know, according to the ohm’s law, $I = \frac{V}{R} = \frac{6}{24}=0.25 A$

Potential difference V across electric lamp,

$\begin{array}{l}{V=I \times R_{1}} \\ {V=0.25 \times 20} \\ {V=5 V}\end{array}$