Energy Transformation and Conservation Quiz
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

In what type of motion does the velocity change by equal amounts in equal time intervals?

  • Uniform acceleration (correct)
  • Uniform motion
  • Non-uniform acceleration
  • Non-uniform motion

    • What is a characteristic of the velocity-time graph for all uniformly accelerated motions?

  • It is a straight line (correct)
  • It is sinusoidal
  • It is a curve
  • It is parabolic

    • In non-uniformly accelerated motions, how can the velocity-time graph vary?

  • Sinusoidal shape
  • Always a straight line
  • Parabolic shape (correct)
  • Triangle shape

    • What does the graph in figure 1.8 indicate about uniform acceleration in motion?

    <p>Velocity changes by equal amounts in equal time intervals</p> Signup and view all the answers

    What distinguishes the car's velocity in the given example from that of a train?

    <p>Car's velocity is continuously changing due to uniform acceleration</p> Signup and view all the answers

    How does the distance-time graph differ for uniform and non-uniform motion?

    <p>Non-uniform motion has varying slopes on the graph</p> Signup and view all the answers

    What is the purpose of using nichrome wire XY in the experiment?

    <p>To act as the resistance</p> Signup and view all the answers

    In the experiment, what does the observation chart help in recording?

    <p>Current and potential difference readings</p> Signup and view all the answers

    Based on Ohm's Law, what happens to current when voltage is increased?

    <p>Current increases</p> Signup and view all the answers

    What is the resistance of the conductor in the example provided with a potential difference of 24 V and current of 0.24 A?

    <p>100 Ω</p> Signup and view all the answers

    In Example 3, what is given to calculate the current flowing through the filament of the light bulb?

    <p>Power (W)</p> Signup and view all the answers

    What is determined by drawing a graph between current and potential difference in the experiment?

    <p>Resistance of the nichrome wire</p> Signup and view all the answers

    What is the law of conservation of energy?

    <p>Energy can only be transferred between forms, not created or destroyed</p> Signup and view all the answers

    How does energy transfer between the two pendulums in the provided experiment?

    <p>By transferring kinetic energy through the thread</p> Signup and view all the answers

    What form of energy is present when an object is falling freely due to gravity?

    <p>Mechanical energy</p> Signup and view all the answers

    In the provided diagram, what type of energy conversion is represented by the Secondary cell?

    <p>Chemical to electrical energy</p> Signup and view all the answers

    What would happen to the energy level if the two pendulums in the experiment had different lengths?

    <p>Energy transfer would not occur</p> Signup and view all the answers

    What principle governs how energy transformations occur as per the provided text?

    <p>Law of Conservation of Energy</p> Signup and view all the answers

    In the context of the artificial satellite moving around the Earth in a circular orbit, why is the work done by the gravitational force considered zero?

    <p>The gravitational force and the displacement are perpendicular to each other.</p> Signup and view all the answers

    What is the main objective of the National Physical Laboratory in New Delhi?

    <p>To establish national standards of various physical quantities.</p> Signup and view all the answers

    If Pravin applies a force of 100 N at an angle of 60 degrees to take an object of mass 20 kg to a height of 10 m horizontally, what is the work done?

    <p>400 J</p> Signup and view all the answers

    How is work related to displacement in the context of Pravin's applied force?

    <p>Work is directly proportional to displacement.</p> Signup and view all the answers

    What is the relationship between the applied force and the displacement when work is calculated?

    <p>Force and displacement must be in the same direction.</p> Signup and view all the answers

    In what scenario would the work done by a force be zero?

    <p>The angle between force and displacement is 90 degrees.</p> Signup and view all the answers

    What is the resistivity of the material of the conducting wire in Example 2?

    <p>4.71 x 10^-5 W m</p> Signup and view all the answers

    What is the current flowing through the appliance in Example 4?

    <p>0.3 A</p> Signup and view all the answers

    How much potential difference should be applied across the two ends of the appliance with a resistance of 500 W in Example 4?

    <p>150 V</p> Signup and view all the answers

    What is the resistance of the copper wire in Example 5?

    <p>2.5 W</p> Signup and view all the answers

    If the potential difference across an appliance is 25 V and the resistance is 50 W, what is the current flowing through it?

    <p>1 A</p> Signup and view all the answers

    If a wire has a resistance of 20 W and a current of 5 A flowing through it, what is the voltage across its ends?

    <p>100 V</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser