House current is 120 volts. If a light bulb runs a current of 10 amps, what is the resistance?

12 ohms

Explanation:

Ohm's Law tells the relationship between voltage, current, and resistance.

It can be written in three different ways, depending on which ones you know,

and which one you want to find.

Here's the one we need:        

                          Resistance  =  (voltage) divided by (current)

                                              =  (120 V)  /  (10 Amp)

                                              =          12 ohms .

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the total distance traveled by the car is

30km + 49km = 79 km .