Vernier Software & Technology

# Capacitors and Inductors

## Introduction

By now you have examined the effect that resistors have on the electric potential and current in DC circuits. In such circuits, the electric potential and current reach a steady state almost instantaneously. In this experiment, you will examine the transient states that occur in DC circuits when two different kinds of circuit elements–capacitors and inductors–are placed in series with a resistor. Your goal is to determine expressions that relate the time rate of change in the electric potential and current to system parameters.

## Objectives

In this experiment, you will

• Collect electric potential and current data in a DC circuit in which a capacitor or an inductor is placed in series with various resistors.
• Analyze the potential vs. time graphs for capacitors and inductors.
• Determine the best-fit equations for the potential vs. time graphs.
• Determine the quantity of charge stored by a capacitor from a graph of current vs. time.
• Relate the parameters in the best-fit equations for potential vs. time to their physical counterparts in the system.

## Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

You may also need an interface and software for data collection. What do I need for data collection?

## Advanced Physics with Vernier — Beyond Mechanics

See other experiments from the lab book.

 1 Behavior of a Gas 2 Heat Engines 3 Standing Waves on a String 4 Standing Waves in a Column of Air 5 Doppler Effect 6 Electrostatics 7 Coulomb's Law 8 Mapping Electric Potential 9 Factors Affecting Electrical Resistance 10 Series and Parallel Circuits 11 Faraday’s Law: Moving Magnet 12 Faraday’s Law: Alternating Current 13 Capacitors and Inductors 14 RLC Circuits 15 Curved Mirrors and Images 16 Thin Lenses and Real Images 17 Thin Lenses and Virtual Images 18 Aperture and Depth of Field 19 Interference 20 Diffraction 21 Spectrum of Atomic Hydrogen 22 Planck’s Constant

### Experiment 13 from Advanced Physics with Vernier — Beyond Mechanics Lab Book

#### Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.