Ohm\'s Law Lab 1.) Each of the following graphs represents the relationship betw

Question

Ohm's Law Lab

1.) Each of the following graphs represents the relationship between voltage(V) and current(I), current(I) and resistance(R) or voltage(V) and current(I). Identify which of these follow or do not follow Ohm's law. Please Explain!

2.) The diagram shows a light bult connected to a 12-V car battery. The + and - terminals are shown.

    a.) As a + charge moves through the battery from D to A, it (gains, loses) potential energy and (gains, loses) electric potential. The point of highest energy within a battery is the (+,-) terminal.

    b.) Use >,<, and = signs to compare the electric potential (V) at the four points of the circuit.

                    VA        VB     VC           VD

Explanation / Answer

1.

in ohms law :Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points.

SO I= mV

so graph must be between V and I

and straight line

so OPTION 3. is correct

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2.

(a) as the + charge moves from + terminal to - termianl so

+ is at a high voltage than -

b)Va=Vb>Vc=Vd

since A and B are short circuited

so Va=Vb

since C and D are short circuited

so Vc=Vd

and current is flowing from b to c

so Vb>Vc

so

Va=Vb>Vc=Vd

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