Question

Calculate the effective resistance in series for n resistors each of resistance
R ohms.

Answer 1

Answer:

Answer

Correct option is

C

R

2

=XY

We know that if n equal resistors are connected in series equivalent resistance is given by

X=nR

And,if n equal resistors are connected in parallel, equivalent resistance is given by

Y=

n

R

Now,XY=nR×

n

R

=R

2

⟹R

2

=XY

Step-by-step explanation:

I think it's helpful to you

Answer 2

Answer:

according to Ohm’s law, the voltage drop, V, across a resistor when a current flows through it is calculated using the equation V = IR, where I equals the current in amps (A) and R is the resistance in ohms (Ω). Another way to think of this is that V is the voltage necessary to make a current I flow through a resistance R. So the voltage drop across R1 is V1 = IR1, that across R2 is V2 = IR2, and that across R3 is V3 = IR3. The sum of these voltages equals the voltage output of the source; that is,

V = V1 + V2 + V3.