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Alex_Xolod [135]
3 years ago
6

A toaster is rated at 600W, when connected to a120-V source. What current does the toaster carry, and what is its resistance?

Physics
1 answer:
MissTica3 years ago
4 0

Explanation:

Given parameters:

Power of the toaster  = 600W

Voltage  = 120V

Unknown:

Current = ?

Resistance = ?

Solution:

The power in the circuit is related to resistance and current using the expression below;

       P = IV  

       P = \frac{V^{2} }{R}

P is the power

I is the current

V is the voltage

R is the resistance

    To find the current;

        I = \frac{P}{V}   = \frac{600}{120}  = 5A

     Now, resistance;

       V²   = PR

       R = \frac{V^{2} }{P}   = \frac{120^{2} }{600}  = 24ohms

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