Dynamic Electrical Circuits Challenge

What is Ohm's Law and how is it expressed mathematically?

• R = V - I

• V = R / I

• Ohm's Law is expressed as V = I * R.

• I = V + R

If a circuit has a voltage of 12V and a resistance of 4Ω, what is the current flowing through the circuit?

• 2A

• 4A

• 3A

• 6A

Describe the difference between series and parallel circuits.

• In series circuits, the voltage is divided among components, while in parallel circuits, the voltage remains the same across all components.

• Series circuits have multiple paths for current, while parallel circuits have a single path.

• Series circuits have a single path for current, while parallel circuits have multiple paths.

• Parallel circuits are used for high voltage applications, while series circuits are used for low voltage applications.

In a series circuit with three resistors (2Ω, 3Ω, and 5Ω), what is the total resistance?

• 5Ω

• 10Ω

• 8Ω

• 12Ω

What happens to the total current in a parallel circuit if more branches are added?

• The total current increases.

• The total current decreases.

• The total current fluctuates randomly.

• The total current remains the same.

Calculate the electrical power consumed by a device that uses 5A of current at 120V.

• 720 watts

• 300 watts

• 600 watts

• 500 watts

What is the formula for calculating electrical power in a circuit?

• P = I / V

• P = V + I

• P = V - I

• P = V × I

Identify the function of a capacitor in an electrical circuit.

• To act as a resistor in the circuit.

• The function of a capacitor in an electrical circuit is to store and release electrical energy.

• To convert AC to DC power.

• To amplify electrical signals in a circuit.

How do you measure voltage across a component in a circuit?

• Connect a voltmeter in parallel with the component.

• Connect a voltmeter in series with the component.

• Use an ammeter to measure the voltage.

• Measure the voltage with a multimeter set to current mode.

What is the role of a fuse in an electrical circuit?

• The role of a fuse in an electrical circuit is to protect against overcurrent by breaking the circuit when the current exceeds a safe level.

• To convert AC to DC power.

• To increase the voltage in the circuit.

• To store electrical energy for later use.