markstoly2 markstoly2

31-05-2017
Physics

contestada

the circuit below shows some circuitry in a small toy robot when the circuit is on the robot moves its arms in blinks a light on its head
9v battery
18ohms motor
18ohms light

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31-05-2017

Not sure of what you're asking for but, here the unknown is the current of the circuit.
Use the formula V = IR
We could tell that it's in a series.
Solve for I:
I = 9v/(18 + 18)
I = 0.25 OHMS

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