Question

three resister having resistance of 10ohm, 15ohm and 30ohm find the total resistance when they are connected in series and parallel connection​

Answer 1

Explanation:

1/r1 + 1/r2 + 1/r3 etc.=1/R simple arithmetic.

Then V=RI or I=V/R

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Answer 2

$R_1$ = 10 Ω

$R_2$ = 15 Ω

$R_3$ = 30 Ω are the given resistors.

(i) When they are in series combination

$R_{eq}$ = $R_1$ + $R_2$ + $R_3$ = 10 + 15 + 30 = 55 Ω

(ii) When they are in parallel combination

$\frac{1}{R_{eq}}$ = $\frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3}$

$\frac{1}{R_{eq}}$  = $\frac{1}{10} + \frac{1}{15} + \frac{1}{30}$

$\frac{1}{R_{eq}}$   = $\frac{6}{30}$

$R_{eq} = 5$ Ω

pls mark as brainliest if you find this helpful! it took a lot of time to do with math input :D