Question

Observe the circuit diagram given below, find the error and redraw the correct diagram.

Answer 1

Answer:

Explanation:

When 8 and 12 are in parallel  

and 7.2 is in series with them  

Net Resistance $$ \dfrac { 7.2 }{ 10 } +\dfrac { 8\times 12 }{ 12+8 } $$

$$=\dfrac { 72 }{ 10 } +\dfrac { 96 }{ 20 } \\ =\dfrac { 72 }{ 10 } +\dfrac { 48 }{ 20 } \\ =\dfrac { 120 }{ 10 } \\ =12\Omega $$

Total current $$=\dfrac { V }{ netR } =\dfrac { 6 }{ 12 } =0.5\Omega $$

Voltage across $${ R }_{ 1 }=i{ R }_{ 1 }\\ =0.5\times 7.2\\ =3.6$$

Answer 2

Explanation:

Hope that both the attachment helps you in better understanding the question answer.