(a) Find the voltage drop in the first extension cord having a 0.0360 N resistance and through which 6.20 A is flowing. (b) The second extension cord is cheaper and utilizes thinner wire. It has a resistance of 0.072 N and the current flowing through it is 6.20 A. By what amount does the voltage supplied to the appliance change when the first extension cord is replaced by the second?

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The cord from an appliance is too short to reach the wall outlet in your room. You have two extension cords to choose from.
(a) Find the voltage drop in the first extension cord having a 0.0360 resistance and through which 6.20 A is flowing.
v
(b) The second extension cord is cheaper and utilizes thinner wire. It has a resistance of 0.072 N and the current flowing through it is 6.20 A. By what amount does the voltage supplied to the
appliance change when the first extension cord is replaced by the second?
Transcribed Image Text:The cord from an appliance is too short to reach the wall outlet in your room. You have two extension cords to choose from. (a) Find the voltage drop in the first extension cord having a 0.0360 resistance and through which 6.20 A is flowing. v (b) The second extension cord is cheaper and utilizes thinner wire. It has a resistance of 0.072 N and the current flowing through it is 6.20 A. By what amount does the voltage supplied to the appliance change when the first extension cord is replaced by the second?
Expert Solution
Step 1

Ohm's Law

The potential difference between a conductor is directly proportional to the current flowing through the conductor. If V is the potential difference across the conductor and I is the current flowing through the conductor

V=IR

R is the proportionality constant and is known as the resistance of the wire. The resistance of the wire is defined as the opposition offered to the flow of current in the conductor.

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