1. Define potential difference.
2. State Ohm’s law
3. Define the SI unit of electric current
4. Which characteristic property of copper is helpful for
using it as a good conductor? Explain
5. The p.d across the terminals of an electric oven is
220V, and the resistance offered by the oven is 11 ohm
.Calculate the electric current flowing through it.
Answers
Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. **Measured in Volts: **Potential difference (p.d.) is measured in volts (V) and is also called voltage. ... We use a voltmeter to measure potential difference (or voltage).
Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change.
The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter
High Conductivity
Surpassed only by silver, copper is a highly conductive metal. This means electricity can pass through it with greater ease, making it ideal for use in electrical wires.
one question is not done.
Answer:
1. The difference of electrical potential between two points.
1. The difference of electrical potential between two points.2. Ohm's law, description of the relationship between current, voltage, and resistance. The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials.