Explain the Series and parallel combinations of resistors with the help of its equation.

1 answer:

8 0

In series combination, resister are connected end to end and current has a single path through the circuit but the potential difference varies across each resistor. Thus we can write as,
V = V1 + V2 + V3
according to Ohm's law V = IR So,
V1 = I R1, V2 = I R2, V3 = I R3
V = I R1 + I R2 + I R3
V = I(R1+R2+R3)
V =IRe
All the individual resistances become equal to the equivalent resistance.
or Re = R1 + R2 + R3......Rn
In parallel combination, each resistor'sone is connected to the positive terminal while the other end is connected to a negative terminal. The potential difference across each resistance is the same and the current passing through them is different.
V = V1 =V2=V3
I = I1+ I2+I3
Current throught each resistor will be:
I1= V/R1 , I2 = V/R2 = I3 = V/R3
I = V (1/R1+ 1/R2+1/R3)
In case of equivalent resistance I=V/Re
V/Re = V (1/R1+ 1/R2+1/R3)
So the equivalnet resistance is the sum of all resistances
1/Re = 1/R1+ 1/R2+1/R3

You might be interested in

verdadero o falso de La energía interna es la energía térmica asociada al objeto en virtud del movimiento de sus moléculas.

Phantasy [73]

Bbbnnnsnmekdksjsjdjdjdjd

4 0

3 years ago

Please help on this one?

lisov135 [29]

Answer:

The current in a resistor decreases by a factor of 4.

Explanation:

I = $\frac{E}{R}$

Where (I) is the current, (E) is the voltage and (R) is the resistance.

Decreasing the voltage by 4 gives;

I = 0.25 $\frac{E}{R}$

Since you have multiplied $\frac{E}{R}$ by 0.25,

You have to multiply I by 0.25 so the current decreases by a factor of 4.

3 0

3 years ago

What are units for measuring specific heat

skad [1K]

it's joules per gram degree celsius

5 0

4 years ago

Which human body system provides nutrients for the body by breaking<br> down food? *

dimaraw [331]

Answer:

The digestive system provides nutrients to the body by breaking down food.

6 0

4 years ago

An electron in a tv picture tube is accelerated through a potential difference of 10 kv before it hits the screen. What is the k

fomenos

Answer:

10,000 eV

Explanation:

Due to the law of conservation of energy, the kinetic energy of the electron at the end of its path is equal to its initial electric potential energy, given by:

$U=q\Delta V$