Question

It is given 5 ohm ,20 ohm resistors and 10V battery
a. draw the circuit diagram of series combination of these resistors to the battery
b. what is the effective resistance of this circuit
c. what is the current in the circuit

Answer 1

Answer: a) please see the attached document for diagram.

b ) effective Resistance of the circuit is 25 ohm

c ) Current in the Circuit is 0.4 Ampere

Explanation:

Given : Resistor 1 ( R1 ) = 5ohm

Resistor 2 ( R2 ) = 20 ohm

Potential difference ( V ) = 10V

To find : 1) effective Resistance of the circuit.

2) Current in the Circuit

Formula : Effective Resistance = R1 + R2

Reff = 5ohm + 20ohm

Reff = 25 ohm

The Effective Resistance of the Circuit is 25 ohm

Also,

I = V / Reff

Where ,

I = Current

V = Voltage Applied

Reff = Effective Resistance

Substituting the value in above formula,

I = 10V / 25

I = 0.4 A