Isabell502 Isabell502

05-06-2015
Physics

Answered

A 1.5V battery is connected to a small light bulb with a resistance of 3.5 what is the current in the bulb?

Answer :

05-06-2015

Technically, we don't have the information needed to calculate the current,
because you haven't mentioned the units of the 3.5 .

Since the 3.5 is a resistance, we strongly suspect ... and we'll therefore
assume ... that the 3.5 has the units of ohms. Then . . .

Current = (voltage) / (resistance) = (1.5/3.5) = 3/7 of an Ampere.

(429 mA, rounded)

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