Understanding Internal and Load Resistance

What is internal resistance?

• The resistance outside a power source

• The resistance within a power source

• A physical resistor inside a cell

• The resistance of a wire in a circuit

Which of the following is NOT a source of internal resistance?

• A resistor

• A dynamo

• A generator

• A cell

What does load resistance refer to?

• The resistance of a battery

• The effective resistance outside the source

• The resistance of a single resistor

• The resistance within a power source

How is load resistance calculated in a circuit with multiple resistors?

• By multiplying the resistances

• By dividing the total voltage by current

• By summing up the resistances of all resistors

• By subtracting the smallest resistance from the largest

In a circuit with resistors of 1 ohm, 2 ohms, and 3 ohms, what is the load resistance?

• 6 ohms

• 5 ohms

• 3 ohms

• 1 ohm