Gr 11 Physical Sciences: Ch 9.1 Ohm’s Law

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the characteristic of the graph of current vs. voltage for ohmic conductors?

  • A straight line (correct)
  • A parabolic line
  • A curved line
  • A zigzag line

What happens to the resistance of non-ohmic conductors when the temperature changes?

  • It changes randomly
  • It decreases
  • It increases (correct)
  • It remains the same

In a series circuit, what is the relationship between the total resistance and the resistances of individual resistors?

  • Rs = R1 × R2 × R3 × ... × Rn
  • Rs = R1 + R2 + R3 + ... + Rn (correct)
  • Rs = R1 / (R2 + R3 + ... + Rn)
  • Rs = R1 - R2 + R3 - ... + Rn

What is the same for all components in a series circuit?

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

How is the total resistance in a parallel circuit calculated?

<p>1/Rp = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn (C)</p> Signup and view all the answers

What is the same for all components in a parallel circuit?

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

How is the total current in a parallel circuit calculated?

<p>I = I1 + I2 + I3 + ... + In (B)</p> Signup and view all the answers

What is the correct order of operations when analyzing a circuit with multiple series and parallel components?

<p>Calculate the total resistance of each parallel portion, then add them in series (A)</p> Signup and view all the answers

What is the unit of measurement for the amount of energy per unit charge?

<p>Joule per Coulomb (C)</p> Signup and view all the answers

What is the relationship between current, voltage, and resistance in a circuit according to Ohm's Law?

<p>I = V/R (C)</p> Signup and view all the answers

What happens to the resistance of an ohmic conductor when the voltage is varied across it?

<p>It remains constant (B)</p> Signup and view all the answers

What is the graph that results from plotting voltage on the x-axis and current on the y-axis?

<p>A straight-line graph (C)</p> Signup and view all the answers

What is an example of a non-ohmic conductor?

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

What is the definition of electrical current?

<p>The rate of flow of charge through a circuit (B)</p> Signup and view all the answers

What happens to the resistance of a conductor when its temperature changes?

<p>It changes for non-ohmic conductors (D)</p> Signup and view all the answers

What is the formula for calculating resistance?

<p>R = I/V (D)</p> Signup and view all the answers

What is the fundamental quantity that Ohm's Law relates?

<p>Current, voltage, and resistance (A)</p> Signup and view all the answers

What is the condition for the resistance of a conductor to be constant?

<p>Constant temperature (C)</p> Signup and view all the answers

What type of conductor does not obey Ohm's Law?

<p>Non-ohmic conductor (D)</p> Signup and view all the answers

What is the effect of increasing the voltage across an ohmic conductor?

<p>The current flowing through the conductor increases (B)</p> Signup and view all the answers

What is the formula that describes the relationship between current, voltage, and resistance in a circuit?

<p>I = V/R (C)</p> Signup and view all the answers

What is the definition of resistance in a circuit?

<p>A measure of how hard it is to push current through a circuit element (D)</p> Signup and view all the answers

What is the characteristic of ohmic conductors?

<p>Their resistance remains constant with varying voltage (C)</p> Signup and view all the answers

What is an example of an ohmic conductor?

<p>Circuit resistor (B)</p> Signup and view all the answers

What is the main difference between ohmic and non-ohmic conductors?

<p>Ohmic conductors have a constant resistance, while non-ohmic conductors have a varying resistance (D)</p> Signup and view all the answers

What is the total resistance in a circuit with three resistors in parallel, each with a resistance of 2 ohms, 3 ohms, and 4 ohms?

<p>12/7 ohms (C)</p> Signup and view all the answers

In a series circuit with two resistors, what is the relationship between the voltage across each resistor and its resistance?

<p>The voltage across each resistor is directly proportional to its resistance (C)</p> Signup and view all the answers

What is the current through each component in a series circuit?

<p>The same for all components (B)</p> Signup and view all the answers

How do you analyze a circuit with multiple series and parallel components?

<p>Calculate the total resistance of each parallel portion first, then add up these resistances in series (C)</p> Signup and view all the answers

What is the formula for the total resistance in a series circuit with n resistors?

<p>R_s = R_1 + R_2 + ... + R_n (D)</p> Signup and view all the answers

What is the current through each parallel path in a parallel circuit?

<p>Different for each path (A)</p> Signup and view all the answers

What is the voltage across each component in a parallel circuit?

<p>The same for all components (A)</p> Signup and view all the answers

What is the primary reason why the resistance of an ohmic conductor remains constant?

<p>The temperature of the conductor is constant (A)</p> Signup and view all the answers

What is the relationship between the voltage and current in a non-ohmic conductor?

<p>There is no definite relationship between the voltage and current (A)</p> Signup and view all the answers

What is the unit of measurement for the rate of flow of charge through a circuit?

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

Which of the following is NOT a characteristic of ohmic conductors?

<p>The conductor is made of a specific material (C)</p> Signup and view all the answers

What is the physical quantity that is measured by the voltage across a conductor?

<p>The energy per unit charge (D)</p> Signup and view all the answers

What is the condition for the current flowing through a conductor to be proportional to the voltage across it?

<p>The conductor is at a constant temperature (C)</p> Signup and view all the answers

What is the relationship between the voltage and current in a circuit according to Ohm's Law?

<p>The current is proportional to the voltage and inversely proportional to the resistance (D)</p> Signup and view all the answers

What is the difference between ohmic and non-ohmic conductors?

<p>Ohmic conductors have a constant resistance, while non-ohmic conductors have a variable resistance (D)</p> Signup and view all the answers

What is the primary difference between the total resistance in a series circuit and a parallel circuit?

<p>The total resistance in a series circuit is the sum of the individual resistances, while in a parallel circuit, it is the reciprocal of the sum of the reciprocals of individual resistances. (B)</p> Signup and view all the answers

In a circuit with two resistors in series and one resistor in parallel, what is the correct order of operations to calculate the total resistance?

<p>Calculate the total resistance of the series resistors first, then calculate the total resistance of the parallel resistor and the series resistors combined. (B)</p> Signup and view all the answers

What is the relationship between the voltage across each resistor and its resistance in a series circuit?

<p>The voltage across each resistor is directly proportional to its resistance. (A)</p> Signup and view all the answers

What is the primary advantage of using parallel circuits over series circuits?

<p>Parallel circuits provide multiple paths for current to flow, reducing the risk of circuit failure. (D)</p> Signup and view all the answers

What is the consequence of combining multiple resistors in series?

<p>The total resistance increases. (B)</p> Signup and view all the answers

What is the characteristic of the graph of current vs. voltage for non-ohmic conductors?

<p>The graph is a curve. (A)</p> Signup and view all the answers

What is the relationship between the total current and the currents through each resistor in a parallel circuit?

<p>The total current is the sum of the currents through each resistor. (A)</p> Signup and view all the answers

What is the condition for a conductor to be classified as ohmic?

<p>The conductor's resistance is constant regardless of voltage. (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser