Measurement of Medium Resistance by Ammeter Voltmeter Method Problem No 3

TL;DR

Solving resistance measurement with ammeter and voltmeter, calculating true resistance value with error.

Transcript

hello friends in this video we are going to solve a problem based on the measurement of resistances medium resistance using the ammeter voltmeter method so let us start with a problem so our problem is that we are measuring a resistance using the meter voltmeter method and the current is measured through the ammeter and voltage is measured through ... Read More

Key Insights

• 🫠 Understanding different types of errors in instrument readings, such as reading errors and constructional errors.
• ❓ Calculation of total error in resistance value involves considering errors from both ammeter and voltmeter readings.
• ❓ True resistance value is obtained by considering measured value along with associated error percentage.
• 🈸 The problem showcases the application of resistance measurement techniques using ammeter and voltmeter.
• 🖐️ Precision and accuracy play crucial roles in determining the true value of resistance in the given scenario.
• ❓ The calculation of resistance involves considering both measured values and error percentages.
• 🫠 Practical implications of reading errors and constructional errors in instrument measurements are demonstrated in the problem.

Questions & Answers

Q: What instruments are used in measuring resistance in the given problem?

The problem involves using an ammeter to measure current and a voltmeter to measure voltage for calculating resistance.

Q: How are the reading error and constructional error determined in the ammeter and voltmeter?

The reading error is calculated based on the instrument's ability to distinguish one-tenth of a scale division, while constructional error is provided in the problem statement.

Q: What formula is used to calculate the true resistance value in the problem?

The formula for true resistance is derived from the measured resistance value and the resistance of the ammeter, taking into account the associated error percentage.

Q: How is the total error in the resistance value calculated in the problem?

The total error in the resistance value is determined by summing up the error percentages from the voltmeter and ammeter, reflecting the accuracy of the measurement.

Summary & Key Takeaways

• Problem involves measuring resistance with ammeter and voltmeter, with given current and voltage readings.

• Calculate reading errors and constructional errors in instruments to determine total error in resistance value.

• True resistance value is calculated using measured values with associated error percentage.