Question

In the given figure, find the current in 20Ω and 30Ω resistor. Also find the total voltage.​

Answer 1

Answer:

$I_{1} = 1.8A$

$I_{2} = 1.2A$

$V=81V$

Explanation:

I am here giving you a trick, trust me its worthy!

For currents in branches as in $I_{1}$,

(Total current × Resistance in lower branch) / Sum of the resistances

here, I have done as, $I_{1}$,= $\frac{30 * 3}{60}$ = 1.8A.

Now for the the other simply, $3A-1.8A= 1.2A$.

For total voltage,

First, find Equivalent resistance, equals out to be, 27Ω.

Next Multiply it with the total current 3A!.

Rules out to be 81 V

Kudos!