Equivalent Resistance Calculation in a Parallel Circuit

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What is the formula to calculate total resistance for resistors connected in series?

$R_s = R_1 + R_2$ (correct)

$R_s = R_1 \times R_2$

$R_s = R_1 - R_2$

$R_s = \frac{R_1}{R_2}$

In an electric circuit with resistors joined in series, what happens to the total resistance compared to the individual resistors?

It is half the sum of the individual resistances

It is greater than any individual resistance

It is equal to the sum of the individual resistances (correct)

It is less than the sum of the individual resistances

What happens to the potential difference across the equivalent single resistor when multiple resistors are replaced by it in a series circuit?

It decreases

It increases

It remains the same (correct)

It cannot be calculated

What happens to the total current in a series circuit when more resistors are added?

It decreases Signup and view all the answers

When resistors are connected in parallel, what happens to the total resistance compared to the individual resistors?

It is less than the smallest individual resistance Signup and view all the answers

What happens to the total current in a parallel circuit when more resistors are added?

It increases Signup and view all the answers

What is the equivalent resistance (R') when replacing resistors R1 and R2 by a single resistor?

8 Ω Signup and view all the answers

In a series circuit, what happens when one component fails?

The circuit is broken Signup and view all the answers

How is the current distributed in a parallel circuit?

It is divided among the electrical gadgets Signup and view all the answers

What is the total resistance (R) in the given scenario?

18 Ω Signup and view all the answers

In a series circuit, why would it be impractical to connect an electric bulb and an electric heater in series?

Because they require different current values to operate properly Signup and view all the answers

How does a parallel circuit benefit electrical gadgets with different resistance requirements?

By dividing the current among the gadgets Signup and view all the answers

What is the relationship between the total current (I) and the individual currents (I1, I2, I3) in a parallel combination of resistors?

I = I1 + I2 + I3 Signup and view all the answers

What is the equivalent resistance (Rp) of a parallel combination of resistors if the total current (I) flowing through it is given by Ohm's law as I = V/Rp?

$R_p = rac{V}{I}$ Signup and view all the answers

In a series circuit, what happens to the current when an ammeter is inserted in series with a resistor?

Current remains the same Signup and view all the answers

If the potential difference (V) across a combination of resistors in parallel is V, what is the potential difference across each individual resistor?

$V$ Signup and view all the answers

What is the relationship between the current (I1) flowing through a resistor R1 and the potential difference (V) across it?

$I1 = V / R1$ Signup and view all the answers

When measuring the currents through resistors in a parallel combination, what relationship should be observed among I, I1, I2, and I3?

$I = I1 = I2 = I3$ Signup and view all the answers