Question

Two wires of resistances 10 $\Omega$ and 5 $\Omega$ are connected in series. The effective resistances is _______ $\Omega$

• A. 15
• B. 20
• C. 30
• D. 40

Answer 1

Answer: (A)

15

we know that in the series combination of two resistors, the equivalent resistance is given by-

$R_{eq}=R_1+R_2$

Here-

$R_{eq}=10+5$

$\Rightarrow R_{eq}=15\Omega$