The equivalent resistance of a series combination

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Solution

Q.
The equivalent resistance of a series combination of two resistances is X ohm. If the resistances are of $10 Ω a n d 40 Ω$ respectively, the value of X will be:

1 $10 Ω$

2 $20 Ω$

3 $50 Ω$

4 $40 Ω$

Ans.
(3)

$R = R_{1} + R_{2} R = 10 + 40 = 50 Ω$

Hence, the value of X is $50 Ω .$

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