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2 years ago

A toaster is rated at 800 w when operating at 120 v dc. what is the resistance of its heating element?

Computers and Technology

1 answer:

rodikova [14]2 years ago

7 0

<h3>iHome</h3>

current = 200mA

Resistance = 24ohms

<h3>Toaster</h3>

current = 6.67A

Resistance = 18 ohms

<h3>Explanation:</h3>

well since power = voltage x current

current = power / voltage

and since voltage = resistance x current

resistance = voltage / current

iHome

current = power / voltage

current = 24W / 120V

current = 200mA

resistance = voltage / current

resistance = 24V / 200mA

resistance = 24ohms

Toaster

current = power / voltage

current = 800W / 120V

current = 6.67A

resistance = voltage / current

resistance = 120V / 6.67A

resistance = 18 ohms

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