Question

The number of resistance are connected in parallel,the total resistance is

Answer 1

Hi Gitanjali!

If all resistors have equal resistance, then R(eq) = r/n; where r is the resistance of one resistor and n is equal to the number of resistors.

If they are of different resistances, then 1/R(eq) = 1/r1 +1/r2 ....+1/rn

Answer 2

Answer:

When a number of resistances are connected in parallel, the total resistance will be less than each individual resistance.

Explanation:

Suppose two resistors R and r are connected in parallel.

Then the equivalent resistance :

$R_0=\frac{R_r}{R+r}$

$=\frac{R}{1+\frac{R}{r} }$

Since $1+\frac{R}{r} > 1$

$R_0 < R$

Similarly, $R_0 < r$

Hence, when a number of resistance are connected in parallel, the total resistance will be less than each individual resistance.

Resistance:

The obstruction to current flow in an electrical circuit is measured by resistance.

The Greek letter omega (Ω) represents the unit of measurement for resistance, known as ohm.

Parallel connection:

All of the components in a parallel circuit are linked across one another to create precisely two sets of electrically coupled points.

A path for electrical current created by one of the load components is referred to as a "branch" in a parallel circuit (such as a resistor).