Question

find the total resistance ​

Answer 1

Answer:

It is in series resistance.

so, equivalent resistance R=4+3=7.

Answer 2

Answer- The above question is from the chapter 'Electricity'.

Let's know about resistance.

Resistance- It is the property of a conductor, semi-conductor or insulator to resist the flow of charges.

R = V/I

where R = Potential difference between two end points and I = flow of current.

Resistance is generally measured in Ohms. (Ω)

R = $\frac{\rho \: * \: l}{A}$

where ρ = resistivity, l = length of material and A = area of material.

R ∝ l

R ∝ ρ

R ∝ 1/A

Resistors can be connected in basically 2 ways:

1. Series Combination

2. Parallel Combination

Concept used: In series combination,

Effective Resistance = Sum of all resistances ( R₁ + R₂ + _ _ _ + Rₙ)

where n = number of resistors connected.

Given question: Find the total resistance.

(Figure has been attached in the question.)

Answer: There are 2 resistors, one of 3 Ω and other of 4 Ω.

They are connected in series in a circuit.

Let R₁ = 3 Ω

R₂ = 4 Ω

Total Resistance = R₁ + R₂

Total Resistance = 3 + 4 = 7 Ω

∴ Total Resistance = 7 Ω.