While buying a hot plate you notice the resistance of the hot plate is 25.0 . when connected to a 120. v source, how much current will the hot plate carry? remember to identify all data (givens and unknowns), list equations?

The basic relationship between voltage, resistance and current of an electrical device is given by Ohm's law:

where
V is the voltage
I is the current
R is the resistance

The hot plate in our problem is connected to a source of V=120 V and it has a resistance of , therefore we can rearrange the previous equation to calculate the current through the device:

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