Determining the Electric Unit Charge after Millikan and Verifying the Charge Quantification Measuring the Rising and Falling Speed

The Determining the Electric Unit Charge after Millikan and Verifying the Charge Quantification Measuring the Rising and Falling Speed is designed to determine the elementary electric charge by observing the motion of charged oil droplets in a controlled electric field. The apparatus allows precise measurement of the rising and falling velocities of oil droplets, enabling accurate calculation of the charge carried by each droplet. Software-based data acquisition improves measurement accuracy by recording multiple rise and fall cycles, providing a comprehensive understanding of charge quantization and the fundamental properties of the electron. Manufactured by Atico Export India.

Principle

The experiment is based on balancing the gravitational force acting on charged oil droplets with the electrostatic force produced by an electric field. The natural falling velocity and the controlled rising velocity of an oil droplet are measured under different electric field conditions. By analyzing these velocities over multiple cycles, the charge on the oil droplet can be calculated with improved accuracy, demonstrating the quantization of electric charge.

Objectives

• Determine the elementary electric charge.
• Verify the quantization of electric charge.
• Measure the rising and falling velocities of charged oil droplets.
• Calculate the charge carried by individual oil droplets.
• Improve measurement accuracy through repeated rise and fall observations.
• Study the balance between gravitational and electrostatic forces.

System Components

Millikan Apparatus :

• Quantity: 1

Millikan Power Supply Unit :

• Quantity: 1

Data Acquisition Interface :

• Quantity: 1

Data Analysis Software :

• Quantity: 1

Timer Box :

• Quantity: 1

Connecting Leads :

• Current Rating: 19 A
• Length: 100 cm
• Red/Blue Pair
• Quantity: 3

Connecting Leads :

• Current Rating: 19 A
• Length: 100 cm
• Color: Black
• Quantity: 1 Pair

Connecting Lead :

• Current Rating: 19 A
• Length: 50 cm
• Color: Red
• Quantity: 1

Additional Requirement

Computer :

• Windows XP / Vista / 7 / 8 / 10 (x86 or x64)
• Required for data acquisition and analysis.

Millikan Oil Drop Apparatus :

• Designed for accurate observation of charged oil droplets.

Precision Velocity Measurement :

• Measures both rising and falling velocities of oil droplets.

Software-Based Data Acquisition :

• Enables automatic data recording and analysis.

Multiple Measurement Cycles :

• Supports repeated rise and fall measurements for improved accuracy.

High Measurement Accuracy :

• Provides reliable determination of the elementary charge.

Educational Design :

• Ideal for studying electrostatics, charge quantization, and modern physics.