Understanding Current and Voltage

What is Ohm's Law?

• Ohm's Law is the relationship between current and voltage.

• Ohm's Law relates current, voltage, and resistance.

• Ohm's Law only applies to direct current circuits.

• Ohm's Law states that resistance is directly proportional to voltage.

How is resistance related to current and voltage?

• Resistance is directly proportional to current and inversely proportional to voltage.

• Resistance is directly proportional to voltage and inversely proportional to current.

• Resistance is directly proportional to current and voltage.

• Resistance is inversely proportional to voltage and directly proportional to current.

What is the formula to calculate power in an electrical circuit?

• P = IV

• P = VI

• P = I/V

• P = V/I

Define voltage in the context of electricity.

• The electric potential difference between two points in an electric circuit.

• The amount of electric charge in a circuit.

• The resistance to the flow of electric current.

• The flow of electric current in a circuit.

What is the unit of measurement for voltage?

• volts

• ohms

• amps

• watts

Explain the concept of current in an electrical circuit.

• The voltage in a circuit

• The movement of electrons in a circuit

• The resistance in a circuit

• The flow of electric charge in a circuit

How does resistance affect the flow of current in a circuit?

• Resistance increases the flow of current in a circuit.

• Resistance decreases the flow of current in a circuit.

• Resistance has no effect on the flow of current in a circuit.

• Resistance impedes the flow of current in a circuit.

What is the relationship between voltage and power?

• Power is equal to voltage squared.

• Power is directly proportional to voltage.

• Voltage has no effect on power.

• Power is inversely proportional to voltage.

Describe the role of voltage in electrical devices.

• Voltage has no effect on electrical devices.

• Voltage is responsible for creating the flow of electric current in electrical devices.

• Voltage is only important in some electrical devices.

• Voltage is responsible for creating heat in electrical devices.

How does electricity flow in a closed circuit?