Electric Circuits and Measurements
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Questions and Answers

What is the effect on capacitance when the distance between the plates is increased?

  • It increases
  • It becomes zero
  • It decreases (correct)
  • It remains the same

    • What is the symbol for capacitance?

  • Q
  • V
  • C (correct)
  • I

    • What is the effect on capacitance when the area of cross section of the plates is decreased?

  • It decreases (correct)
  • It becomes zero
  • It remains the same
  • It increases

    • How are capacitors connected in series?

    <p>In series</p> Signup and view all the answers

    What is the total charge in the given circuit: CE = C1 + C2 + C3 = 0.1 + 0.2 + 0.3 = 0.6μF?

    <p>7.2μC</p> Signup and view all the answers

    What is the energy transferred to the lamp in the given example: A 6V battery supplies a current of 0.5 A to a lamp for 3 minutes?

    <p>54J</p> Signup and view all the answers

    What is the charged particle that flows in a circuit?

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

    What is the SI unit of Potential Difference?

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

    What is the relation between EMF and terminal potential difference when no current flows?

    <p>EMF is equal to terminal potential difference</p> Signup and view all the answers

    What is the main function of resistance in an electrical circuit?

    <p>To control the electron flow in a circuit</p> Signup and view all the answers

    What is the unit of resistance?

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

    What is the relation between Charge, Current, and time?

    <p>Charge is directly proportional to Current and time</p> Signup and view all the answers

    What is produced around a conducting wire when a current flows through it?

    <p>A magnetic field</p> Signup and view all the answers

    What happens to the strength of a magnetic field when the current through the wire is increased?

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

    What is the effect of increasing the distance from the wire on the strength of the magnetic field?

    <p>It decreases</p> Signup and view all the answers

    What is a solenoid?

    <p>A coil of wire used to produce a magnetic field</p> Signup and view all the answers

    What is the purpose of adding an iron core to a solenoid?

    <p>To increase the strength of the magnetic field</p> Signup and view all the answers

    What is the name of the rule used to determine the direction of the force in a motor?

    <p>Fleming's Left-Hand Rule</p> Signup and view all the answers

    What is the direction of the magnetic field when looking at the wire next to the North seeking pole of the magnet?

    <p>Pointing to the right</p> Signup and view all the answers

    What is the unit of Magnetic Flux Density?

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

    What is the formula for the force on a conductor?

    <p>F = BIl</p> Signup and view all the answers

    What is the pH of a neutral solution?

    <p>pH 7</p> Signup and view all the answers

    What is the formula for the torque produced by the armature of a simple DC motor?

    <p>T = nBIld</p> Signup and view all the answers

    What is the purpose of the pH scale?

    <p>To classify a solution as acidic, alkaline, or neutral</p> Signup and view all the answers

    What is the unit of frequency?

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

    What is the formula to calculate the period of a wave?

    <p>Period = 1/frequency</p> Signup and view all the answers

    What is the speed of a wave with a wavelength of 3m and a frequency of 2 Hz?

    <p>6 m/s</p> Signup and view all the answers

    Why do sound waves travel faster through solids than through gases?

    <p>Because solids are more densely packed than gases</p> Signup and view all the answers

    What type of wave causes the medium to move perpendicular to the direction of the wave?

    <p>Transverse wave</p> Signup and view all the answers

    What is the distance traveled by a given point of a wave during a given time interval?

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

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