Question

In: Physics

Examine the results of Part I. What is the relationship between the three voltage readings: V1,...

  1. Examine the results of Part I. What is the relationship between the three voltage readings: V1, V2, and VTOT?
  2. From the equivalent resistance readings for the series circuits, can you come up with a rule for the equivalent resistance (Req) of a series circuit with two resistors?
  3. Examine the results of Part II. What do you notice about the relationship between the three voltage readings V1, V2, and VTOT in parallel circuits?
  4. From the equivalent resistance readings for the parallel circuits, can you come up with a rule for the equivalent resistance (Req) of a parallel circuit with two resistors?
  5. What did you discover about the current flow in a series circuit in Part III?
  6. What did you discover about the current flow in a Parallel circuit in Part III?
  7. If the two measured currents in your parallel circuit were not the same, which resistor had the larger current going through it? Why?

DATA TABLES

Part I: Series circuit

R1 (Ohm)

R2 (Ohm)

I (A)

V1 (V)

V2 (V)

Req (Ohm)

Vtotal (V)

1

56

56

0.0277

1.587

1.518

?

3.105

2

56

82

0.0225

1.805

1.299

?

3.104

3

82

82

0.0189

1.573

1.527

?

3.1

Part II: Parallel circuit

R1 (Ohm)

R2 (Ohm)

I (A)

V1 (V)

V2 (V)

Req (Ohm)

Vtotal (V)

1

56

56

0.1085

?

3.037

?

?

2

56

82

0.0916

?

3.048

?

?

3

82

82

0.0747

?

3.06

?

?

Part III: Currents

R1 (Ohm)

R2 (Ohm)

I1 (A)

I2 (A)

1

56

82

0.0266

0.0243

2

56

82

0.0688

0.0484

Solutions

Expert Solution

In series combination, the current remains same in each resistors while the potential drop is different according to the Ohm's law.

In parallel combination, the current distributes while potential drop across each resistors remains same.

in parallel combination, the current is less in higher resistance branch while in Lower resistance branch the current values is large.

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genius_generous answered 2 years ago
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