1.

The equivalent resistance between points A and B of the following electric circuit willbe ………….. .

Answer»

`4 Omega`
`8 Omega`
`2Omega`
`16Omega`

SOLUTION :The given electric circuit can be drawn as follows:

It is clear from the circuit that resistors `R_1 and R_2` are connected in series.
`:. R. = R_1 + R_2 = 4 +4 = 8 Omega`
Now, R. is connected with `R_3` in parallel COMBINATION.
`:. 1/R = 1/R. + 1/R_3`
`= 1/8 + 1/8`
`= 2/8 = 1/4`
`:. R =4 Omega`


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