Question

resistors and currents

Answer 1

#6

Answer 2

can u tell me equivalent resistance of ur given circuit

Answer 3

i think u know the formula to calculate the equivalent resistance of 2 parallel resistance

Answer 4

at last u hv to calculate the equivalent resistance of 2 series resistance

Answer 5

u know
\[\frac{ 1 }{ R _{p} }=\frac{ 1 }{ R _{1} }+\frac{ 1 }{ R _{2} }\]

Answer 6

\[R _{p}=\]

Answer 7

equivalent resistance of resistance R1 and R2

Answer 8

another formula is
\[R _{s}=R _{1}+R _{2}\]

Answer 9

\[R _{s}=\]

Answer 10

equivalent resistance of 2 series resistance

Answer 11

at last u hv to use ohms law
\[V=IR\]

Answer 12

i can discuss this math more efficiently if u r online

Answer 13

One quick way is to use Millman's Theorem to find voltage then use this to find the required current: https://en.wikipedia.org/wiki/Millman%27s_theorem

$$
v=\cfrac{\cfrac{28}{7.1}}{\cfrac{1}{7.1}+\cfrac{1}{1.7}+\cfrac{1}{5.1}}\\
\implies I_{7.1\Omega}=\cfrac{28-v}{7.1}\text{ Amperes}
$$

Answer 14

Does this make sense?