Combination Circuits and Resistor Rules

In this video, Mr. M explains how to solve combination circuits, which have both series and parallel properties. The main strategy involves condensing the circuit into either a series-only or parallel-only circuit. Two examples are provided: one where parallel resistors are condensed into a series circuit, and another where series resistors are condensed into a parallel circuit. A full example with actual values is also demonstrated, showing how to calculate voltage, current, and resistance using Ohm's Law. The video concludes with a recap of the key strategies and rules for solving combination circuits.

What is a combination circuit?

• A circuit with only series components

• A circuit with no resistors

• A circuit with both series and parallel components

• A circuit with only parallel components

What is the first step in solving a combination circuit?

• Calculate the total voltage

• Identify the power source

• Condense the circuit into series or parallel

• Measure the current

How do you condense two parallel resistors into a series circuit?

• Add the reciprocals of their resistances

• Add their resistances directly

• Multiply their resistances

• Subtract their resistances

What is the rule for adding resistors in series?

• Multiply their resistances

• Add the reciprocals of their resistances

• Subtract their resistances

• Add their resistances directly

In a parallel circuit, what is true about the voltage across each branch?

• It is zero for each branch

• It is the same for each branch

• It is double the total voltage

• It is different for each branch

What is the total resistance of a series circuit with resistors of 2 ohms, 2.5 ohms, and 2 ohms?

• 5.5 ohms

• 4.5 ohms

• 6.5 ohms

• 7.5 ohms

How do you calculate the total current in a circuit using Ohm's Law?

• Divide total voltage by total resistance

• Add total voltage and total resistance

• Multiply total voltage by total resistance

• Subtract total resistance from total voltage

In a series circuit, what is true about the current through each resistor?

• It is different for each resistor

• It is the same for each resistor

• It is zero for each resistor

• It is double the total current

What happens to the current in a parallel circuit?

• It splits between the branches

• It remains the same in all branches

• It becomes zero

• It doubles in each branch

What is the main strategy for solving combination circuits?

• Using only series rules

• Using only parallel rules

• Condensing the circuit

• Ignoring the resistors