Electricity

What is the unit of resistance?

• Volt

• Ampere

• Ohm

• Joule

In a series circuit, how does the total resistance compare to the individual resistances?

• The total resistance is unrelated to the individual resistances.

• The total resistance is equal to the sum of the individual resistances.

• The total resistance is less than the sum of the individual resistances.

• The total resistance is greater than the sum of the individual resistances.

What is the formula to calculate current in a circuit?

• I = R / V

• I = V * R

• I = V / R

• I = V + R

How is voltage defined in an electrical circuit?

• Voltage is the brightness of a light bulb in a circuit.

• Voltage is defined as the energy given per unit charge.

• Voltage is the resistance in an electrical circuit.

• Voltage is the flow of electrons per unit time in a circuit.

What is the formula for power in an electrical circuit?

• P = V + I

• P = V x I

• P = V - I

• P = I / V

State Ohm's Law.

• V = I * R

• V = R / I

• V = I + R

• V = I ^ R

What happens to the current in a series circuit if the resistance is increased?

• The current in the circuit becomes unstable.

• The current in the circuit decreases.

• The current in the circuit increases.

• The current in the circuit remains the same.

What is the relationship between power, current, and voltage in a circuit?

• Voltage is equal to the sum of power and current in a circuit.

• Current is equal to the product of power and voltage in a circuit.

• Power is equal to the division of current by voltage in a circuit.

• Power is equal to the product of current and voltage in a circuit.

Explain the concept of resistance in an electrical circuit.

• Resistance in an electrical circuit is the facilitation of current flow.

• Resistance in an electrical circuit is the increase in voltage.

• Resistance in an electrical circuit is the opposition to the flow of current.

• Resistance in an electrical circuit is the absence of current flow.

What is the SI unit of power?

• Joule (J)

• Volt (V)

• Newton (N)

• Watt (W)