Finding Resistance

The video tutorial demonstrates how to find the resistance of a resistor by setting up a circuit. Katherine uses an ammeter to measure current and a voltmeter to measure voltage. The video explains the step-by-step process of assembling the circuit, checking its functionality, and calculating resistance using the formula R = V/I. The final resistance value is calculated to be 10.3 ohms.

What is the formula used to calculate resistance in a circuit?

• r = i - v

• r = i / v

• r = v * i

• r = v / i

Which device is used to measure the current in a circuit?

• Ohmmeter

• Voltmeter

• Thermometer

• Ammeter

What is the purpose of the power pack in the circuit setup?

• To supply potential difference

• To connect components

• To measure resistance

• To measure current

In which configuration should the ammeter be connected in the circuit?

• In series with the voltmeter

• In parallel with the voltmeter

• In series with the resistor

• In parallel with the resistor

What should you do if the current reading is negative?

• Increase the voltage

• Reverse the connections

• Check the resistor

• Replace the ammeter

What is the measured potential difference in the experiment?

• 0.20 volts

• 2.06 volts

• 10.3 volts

• 2.00 volts

What is the calculated resistance of the resistor in the experiment?

• 10.3 ohms

• 2.06 ohms

• 0.20 ohms

• 5.0 ohms