# What are the rules for series and parallel circuits?

A

**Parallel circuit**has certain characteristics and basic**rules**: A**parallel circuit**has two or more paths for current to flow through. Voltage is the same across each component of the**parallel circuit**. The sum of the currents through each path is equal to the total current that flows from the source.1.

## What are the rules of a series circuit?

UNDERSTANDING & CALCULATING

**SERIES CIRCUITS**BASIC**RULES**. The same current flows through each part of a**series circuit**. The total resistance of a**series circuit**is equal to the sum of individual resistances. Voltage applied to a**series circuit**is equal to the sum of the individual voltage drops.2.

## What is the series circuit?

A

**series circuit**is a**circuit**in which resistors**are**arranged in a chain, so the current has only one path to take. The current**is the**same through each resistor.3.

## What is the difference between a series and a parallel circuit?

**In a series circuit**, the current through each of the components is the same, and the voltage across the

**circuit**is the sum of the voltages across each component.

**In a parallel circuit**, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.

4.

## How many paths are there in a series circuit?

Now, let's look at the other type of circuit, a parallel configuration: Again, we have three resistors, but this time they form more than one continuous path for electrons to flow. There's

**one path**from 8 to 7 to 2 to 1 and back to 8 again.5.

## What happens to the voltage in a series?

The supply

**voltage**is shared between components in a**series circuit**. The sum of the**voltages**across components in**series**is equal to the**voltage**of the supply. The**voltages**across each of the components in**series**is in the same proportion as their resistances.6.

## What is a load in an electrical circuit?

An electrical

**load**is an electrical component or portion of a**circuit**that consumes (active) electric power. This is opposed to a power source, such as a battery or generator, which produces power. In electric power**circuits**examples of**loads**are appliances and lights.7.

## What is the definition of a series circuit?

A

**series circuit**is a closed**circuit**in which the current follows one path, as opposed to a parallel**circuit**where the**circuit**is divided into two or more paths. In a**series circuit**, the current through each load is the same and the total voltage across the**circuit**is the sum of the voltages across each load.8.

## What is a parallel circuit?

A

**parallel circuit**is a closed**circuit**in which the current divides into two or more paths before recombining to complete the**circuit**. Each load connected in a separate path receives the full**circuit**voltage, and the total**circuit**current is equal to the sum of the individual branch currents.9.

## What is the Ohm's law?

The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R.

**Ohm's Law**is given by: V = I R where V is the potential difference between two points which include a resistance R.10.

## How do you find the voltage?

**Part 3**

**Calculating Voltage across a Resistor (Parallel Circuit)**

- Understand parallel circuits.
- Think about how the current flows.
- Use the total voltage to find the voltage across each resistor.
- Calculate the total current of the circuit.
- Compute the total resistance of the circuit.
- Find the voltage from your answers.

11.

## What is a combination circuit?

A "

**COMBINATION CIRCUIT**" is a**circuit**that is a blend of series paths and parallel paths. See Figure for a visual explanation. Most**circuits**are of this variety. Don't be afraid to tackle these**circuits**as far as the math goes.12.

## How does current work in a series circuit?

In a

**series circuit**, the current is the same at each resistor. If the light bulbs are identical, then the resistance is the same for each resistor. The voltage drop (I. The voltage boost in the battery will be equal to the sum of the voltage drops across all three resistors.13.

## Do resistors in series have the same voltage?

**Resistors in Series**carry the

**same current**, but the voltage drop across them is not the

**same**as their individual resistance values will create different voltage drops across each

**resistor**as determined by Ohm's Law ( V = I*R ). Then

**series**circuits are voltage dividers.

14.

## Why do we use parallel circuits in our homes instead of series?

When appliances

**are**connected in a**parallel**arrangement, each of them**can**be put on and off independently. This**is**a feature that**is**essential in a house's wiring. Also, if**the**appliances were wired in**series**,**the**potential difference across each appliance**would**vary depending on**the**resistance of**the**appliance.15.

## What is meant by a short circuit?

A

**short circuit**is simply a low resistance connection between the two conductors supplying electrical power to any**circuit**. This results in excessive current flow in the power source through the '**short**,' and may even cause the power source to be destroyed.16.

## How do you find voltage drop?

To calculate the

**voltage drop**across a resistor, remember: Ohm's Law (V=I*R) is your friend.**Find**the current flowing through a resistor, then multiply the current in amps by resistance in ohms to**find**the**voltage drop**in volts.17.

## What is the circuit?

A

**circuit**is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the**circuit**. Unless the**circuit**is complete, that is, making a full circle back to the electrical source, no electrons will move.18.

## Is Ohm's law?

**Ohm's law**states that the current through a conductor between two points is directly proportional to the voltage across the two points.

19.

## What is a device to break a circuit?

A circuit with more than one path through which electrons can flow. Kind of electricity resulting from a build up of charged particles. A safety device that breaks a circuit when too much current is

**flowing**.20.

## How do you calculate amps?

The formula for Volts is Watts divided by

**Amps**. To use the chart, cover up the V with your finger and use the remaining chart**calculation**of W divided by A. Using our sample panel data, 60 watts divided 5**Amps**equals 12 Volts. The formula for**Amps**is Watts divided by Volts.Updated: 25th November 2019