Question

Observe the given circuit carefully and identify mistakes.((plz ANSWER ASAP and plz give correct answer.))

Answer 1

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

Answer:

1 key is open ( circuit breaker)

2 direction of magnetic field is wrong it would be from N to S

3 Battery is unnamed