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Three 8.0-W resistors are connected in parallel. What is their equivalent resistance?

For a series circuit such as this, simply add the resistances to get the equivalent resistance.

For a series circuit such as this, simply add the resistances to get the equivalent resistance.

For a series circuit such as this, simply add the resistances to get the equivalent resistance.

For a series circuit such as this, simply add the resistances to get the equivalent resistance.

Equivalent series resistance (ESR) is an effective resistance that is used to describe the resistive parts of the impedance of certain electrical components.

Equivalent resistance of a series circuit is the sum of the resistance of all appliances. The formula is R=R1+R2+... where R is equivalent resistance, R1, R2 and so on is the resistance of the individual appliances.