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Gr 8 Natural Sciences Ch 3.3: Parallel circuits

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37 Questions

What is a characteristic of a parallel circuit?

The current divides among the different branches of the circuit.

What happens to the total resistance of a parallel circuit when more resistors are added?

It decreases.

What is true about the voltage across each component in a parallel circuit?

It is the same for each component.

How do you identify a parallel circuit?

Components are connected across common points or junctions.

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

It increases.

What is true about adding cells in parallel?

The overall voltage of the circuit remains the same.

What is the total current supplied by the battery in a parallel circuit?

Equal to the sum of the currents through each parallel branch.

What happens to the current in each branch of a parallel circuit if the branches have identical components?

The current will divide equally among the branches.

What is the primary advantage of connecting components in a parallel circuit?

To provide multiple pathways for the electric current

In a parallel circuit with two identical light bulbs, what happens to the total current if one bulb is replaced with a bulb of twice the resistance?

The total current remains the same

What is the relationship between the total current and the branch currents in a parallel circuit?

The total current is the sum of the branch currents

Why do parallel circuits have multiple pathways for the electric current?

To provide redundancy in case one pathway fails

What happens to the total current strength when multiple identical resistors are added in parallel?

It increases by 50%

How do the currents through each branch of a parallel circuit compare if the branches have different resistances?

The currents are inversely proportional to the resistances

What is the effect of adding more cells in parallel to a circuit?

The total voltage of the circuit remains the same

Why are parallel circuits more reliable than series circuits?

Because they have more pathways for the electric current

What is the primary reason for the total current supplied by the battery being equal to the sum of the currents through each parallel branch?

Because the current is distributed among the different branches of the circuit

In a parallel circuit, what happens to the current strength through each branch if the total current supplied by the battery increases?

The current strength through each branch increases

What is the effect of adding more identical resistors in parallel to a circuit?

The total resistance of the circuit decreases

In a parallel circuit with two branches, what happens to the total current if one branch has a resistor with twice the resistance of the other branch?

The total current decreases

Why do parallel circuits have multiple pathways for the electric current?

To allow the current to flow through multiple components

In a parallel circuit, what happens to the voltage across each component if the total voltage supplied by the battery increases?

The voltage across each component remains the same

What is the relationship between the total current and the branch currents in a parallel circuit?

The total current is equal to the sum of the branch currents

Why are parallel circuits used in many electrical systems?

Because they are more reliable than series circuits

What is the primary advantage of using parallel circuits in electrical systems?

Increased reliability and flexibility

If two identical resistors are added in parallel to a circuit, what happens to the total current supplied by the battery?

It doubles

In a parallel circuit with three branches, what is true about the currents through each branch?

The current is proportional to the resistance of each branch

What happens to the voltage across each component in a parallel circuit if the total voltage supplied by the battery increases?

It remains the same

Why do parallel circuits have multiple pathways for the electric current?

To provide multiple paths for the current to follow

What is the relationship between the total current and the branch currents in a parallel circuit?

The total current is equal to the sum of the branch currents

What happens to the total current strength if multiple identical resistors are added in parallel to a circuit?

It increases by a constant factor

In a parallel circuit with two branches, what happens to the total current if one branch has a resistor with twice the resistance of the other branch?

The total current remains the same

What is the primary advantage of using parallel circuits in electrical systems?

To provide multiple pathways for the electric current, increasing reliability

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

It increases

In a parallel circuit, what is true about the currents through each branch?

The current divides among the branches, but not equally

What is the effect of adding more cells in parallel to a circuit?

The total voltage of the circuit remains the same

In a parallel circuit, what happens to the current strength through each branch if the total current supplied by the battery increases?

It increases

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