Current & Potential Difference

The video tutorial explains the relationship between current, resistance, and potential difference (voltage) using Ohm's Law. It covers how to measure potential difference and current using voltmeters and ammeters, and how to calculate resistance using the V=IR equation. The tutorial includes practical examples and practice questions to reinforce learning.

What is the unit of measurement for potential difference?

• Watts

• Volts

• Ohms

• Amperes

According to Ohm's Law, how is voltage related to current and resistance?

• Voltage is the difference between current and resistance

• Voltage is the product of current and resistance

• Voltage is the sum of current and resistance

• Voltage is the ratio of current to resistance

How should a voltmeter be connected in a circuit to measure potential difference?

• In series with the component

• In parallel with the component

• In series with the power source

• In parallel with the power source

What is the correct way to connect an ammeter in a circuit?

• In parallel with the component

• In series with the component

• In parallel with the power source

• In series with the power source

If a lamp has a potential difference of 1.5 volts and a current of 1 amp, what is its resistance?

• 1.5 ohms

• 2 ohms

• 3 ohms

• 0.5 ohms