Question

Three resistors of 10 ohms, 15 ohms and 20 ohms are connected in series across a battery of 10 V supply . Calculate the total resistance

Answer 1

$\checkmark$ Answer:

$\boxed{45 \ \Omega}$

$\checkmark$ Explanation:

Given that,

Three resistors of 10 ohms, 15 ohms and 20 ohms are connected in series

Therefore,

We know that,

Series Combination:

Resistors are connected in a in a same line.

• Value of Current remains the same
• Value of Voltage changes

Hence,

Formula for Series Combination

$\sf R_s=R_1+R_2+R_3$

Here,

• R₁ = 10 Ω
• R₂ = 15 Ω
• R₃ = 20 Ω

Hence,

$\sf R_s=10 \ \Omega + 15 \ \Omega + 20 \ \Omega$

$\sf R_s=45 \ \Omega$

Therefore,

The total resistance is 45 Ω