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Charge Calculation Challenge
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Charge Calculation Challenge

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@RationalRainbow

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Questions and Answers

Which equation represents Ohm's Law?

  • $P = VI$
  • $Q = It$
  • $V = IR$ (correct)
  • $R = V/I$

    • What is the formula for calculating charge?

  • $P = VI$
  • $Q = It$ (correct)
  • $R = V/I$
  • $V = IR$

    • What is the formula for calculating power?

  • $R = V/I$
  • $P = VI$ (correct)
  • $Q = It$
  • $V = IR$

    • What is the formula for calculating resistance?

    <p>$R = V/I$</p> Signup and view all the answers

    What is the unit of electric current?

    <p>Amperes</p> Signup and view all the answers

    What is the unit of electric charge?

    <p>Coulombs</p> Signup and view all the answers

    Which of the following best describes an electric field?

    <p>A physical field that surrounds electrically charged particles</p> Signup and view all the answers

    What is the net charge of an atom that has gained two electrons?

    <p>Negative</p> Signup and view all the answers

    Which of the following materials is an electrical conductor?

    <p>Copper</p> Signup and view all the answers

    What is the main difference between an electric field from a positive charge and an electric field from a negative charge?

    <p>The direction of the field lines</p> Signup and view all the answers

    Which of the following materials has a low resistivity?

    <p>Metal</p> Signup and view all the answers

    What causes the repulsion between two balloons that are charged with the same type of charge?

    <p>The repulsion of opposite charges</p> Signup and view all the answers

    Which of the following statements is true about electrical insulators?

    <p>They have a high resistance to the flow of electrons</p> Signup and view all the answers

    What is the purpose of a resistor in an electrical circuit?

    <p>To control the flow of electrons</p> Signup and view all the answers

    What is the unit used to measure resistance in an electrical circuit?

    <p>Ohms</p> Signup and view all the answers

    What is the purpose of a voltmeter in an electrical circuit?

    <p>To measure the voltage</p> Signup and view all the answers

    What is the purpose of an ammeter in an electrical circuit?

    <p>To measure the current</p> Signup and view all the answers

    What is the formula to calculate the charge in an electrical circuit?

    <p>Q = V / I</p> Signup and view all the answers

    Which of the following is true about series circuits?

    <p>The total resistance is equal to the sum of the resistances of each component.</p> Signup and view all the answers

    What is the current flowing through the circuit when the switch is closed?

    <p>0.035A</p> Signup and view all the answers

    What is the voltage across the 4.5Ω resistor in the circuit?

    <p>4.51V</p> Signup and view all the answers

    What is the power dissipated by the circuit when the switch is closed?

    <p>18W</p> Signup and view all the answers

    What is the total resistance of the circuit when the switch is open?

    <p>305Ω</p> Signup and view all the answers

    What is the charge in the motor over a period of 3 minutes?

    <p>110C</p> Signup and view all the answers

    Which equation represents the relationship between power (P), voltage (V), and current (I)?

    <p>$P = IV$</p> Signup and view all the answers

    What is the potential difference across a conductor with a current of 12.5A and a power of 1500W?

    <p>1000V</p> Signup and view all the answers

    If a circuit has a potential difference of 80V and a current of 2A, what is the power supplied by the circuit?

    <p>160W</p> Signup and view all the answers

    In a circuit with two bulbs in series and a battery, if one bulb blows out, what happens to the brightness of the other bulb?

    <p>It becomes dimmer</p> Signup and view all the answers

    In a circuit with two bulbs in parallel and a battery, if one bulb blows out, what happens to the brightness of the other bulb?

    <p>It stays the same</p> Signup and view all the answers

    What is the power of an oven that uses a current of 8A and has a potential difference of 12V?

    <p>96W</p> Signup and view all the answers

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