Ohm's Law Basics Quiz
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Questions and Answers

What does Ohm's Law basically describe in a simple circuit?

  • Current and resistance are directly proportional, while voltage is inversely proportional.
  • Voltage and current are directly proportional, while resistance is inversely proportional. (correct)
  • Voltage and resistance are directly proportional, while current is inversely proportional.
  • All three components are independent of each other.

What is the formula for Ohm's Law?

  • R = VI
  • V = IR (correct)
  • I = VR
  • V = I/R

What will happen to the current if the voltage in a circuit doubles while the resistance remains constant?

  • It will stay the same.
  • It will triple.
  • It will be halved.
  • It will double. (correct)

What will happen to the current if the resistance in a circuit increases while the voltage remains constant?

<p>Decrease (A)</p> Signup and view all the answers

A light bulb in a circuit has a resistance of 10 ohms and is connected to a battery with a voltage of 12 volts. What is the current flowing through the bulb?

<p>1.2 A (D)</p> Signup and view all the answers

To which of the following is Ohm's Law primarily applicable?

<p>Metals at constant temperature (C)</p> Signup and view all the answers

Which of the following is Ohm's Law a useful tool for?

<p>Designing and troubleshooting electrical circuits (B)</p> Signup and view all the answers

To which law can Ohm's Law be extended to more complex circuits?

<p>Kirchohoff's Laws (D)</p> Signup and view all the answers

For which law is understanding Ohm's Law essential?

<p>Safely working with electrical equipment (B)</p> Signup and view all the answers

In Ohm's Law (V = IR), which variable represents the force driving the flow of electrons?

<p>Voltage (V) (A)</p> Signup and view all the answers

If the resistance in a circuit remains constant, what happens to the current if the voltage doubles?

<p>It doubles (C)</p> Signup and view all the answers

For a specific resistor, which scenario creates the highest current flow?

<p>High voltage and low resistance (D)</p> Signup and view all the answers

In a series circuit with three resistors, which property remains constant across all resistors?

<p>Current (D)</p> Signup and view all the answers

Which statement accurately describes the relationship between resistance and power dissipation in a circuit?

<p>Power dissipation is inversely proportional to the square of both resistance and voltage (B)</p> Signup and view all the answers

When analyzing a complex circuit with resistors in series and parallel, how do we calculate the total resistance?

<p>Combine series and parallel rules depending on the circuit configuration (B)</p> Signup and view all the answers

Ohm's Law is valid for ideal conductors like perfect wires. However, what happens in the real world for most conductors?

<p>Resistance increases slightly with increasing temperature. (D)</p> Signup and view all the answers

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