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Questions and Answers
What is the total electric force between an electron and a proton compared to the gravitational force at the same distance?
What is the total electric force between an electron and a proton compared to the gravitational force at the same distance?
When charge is transferred from one body to another, what happens to charge overall?
When charge is transferred from one body to another, what happens to charge overall?
In a dipole, if total charge is zero, what does the dipole moment measure?
In a dipole, if total charge is zero, what does the dipole moment measure?
What is the dipole moment if it is stated to be 7.5 × 10⁻⁸ C m along the z-axis?
What is the dipole moment if it is stated to be 7.5 × 10⁻⁸ C m along the z-axis?
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How much charge is transferred when moving from wool to polythene?
How much charge is transferred when moving from wool to polythene?
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In the case where the charge enclosed in two cases is the same, what is the result for electric flux?
In the case where the charge enclosed in two cases is the same, what is the result for electric flux?
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What is the capacitance of a capacitor that has 1.8 × 10⁻⁹ C and a potential difference of 16.6 V?
What is the capacitance of a capacitor that has 1.8 × 10⁻⁹ C and a potential difference of 16.6 V?
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If the current in branch AB is expressed as (4/17) A, which branch has the current of (6/17) A?
If the current in branch AB is expressed as (4/17) A, which branch has the current of (6/17) A?
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What is the stable potential energy when the magnetic moment is parallel to the magnetic field?
What is the stable potential energy when the magnetic moment is parallel to the magnetic field?
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What direction does the force act when the current flows vertically up in a magnetic field?
What direction does the force act when the current flows vertically up in a magnetic field?
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What is the torque when a magnetic moment of 1.28 A m² is aligned with the magnetic field in a uniform field?
What is the torque when a magnetic moment of 1.28 A m² is aligned with the magnetic field in a uniform field?
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What is the magnetic flux change when the surface area through which the field lines are passing changes shape and increases?
What is the magnetic flux change when the surface area through which the field lines are passing changes shape and increases?
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What is the value of Irms as given in 8.2 (a)?
What is the value of Irms as given in 8.2 (a)?
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What torque is produced when a magnetic moment of 0.33 J is in a direction that tends to align with a magnetic field?
What torque is produced when a magnetic moment of 0.33 J is in a direction that tends to align with a magnetic field?
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In a solenoid, which direction does the force act when the current direction is determined by the right-handed screw rule?
In a solenoid, which direction does the force act when the current direction is determined by the right-handed screw rule?
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In 8.1 (c), what condition is necessary to define 'current' as the sum of conduction and displacement currents?
In 8.1 (c), what condition is necessary to define 'current' as the sum of conduction and displacement currents?
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How much energy is stored in a magnetic field when the magnetic moment and magnetic field alignment is unstable?
How much energy is stored in a magnetic field when the magnetic moment and magnetic field alignment is unstable?
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What is the expression for capacitance C as derived in 8.1 (a)?
What is the expression for capacitance C as derived in 8.1 (a)?
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From the values provided in chapter 7, what is the calculated resistance represented in 7.8 (b)?
From the values provided in chapter 7, what is the calculated resistance represented in 7.8 (b)?
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What is the result of applying Fleming’s left-hand rule when the magnetic field lines lie in the plane of the loop?
What is the result of applying Fleming’s left-hand rule when the magnetic field lines lie in the plane of the loop?
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What is the formula B = id / (2π R^2) used to illustrate in the context of oscillating currents?
What is the formula B = id / (2π R^2) used to illustrate in the context of oscillating currents?
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What is the calculated angular frequency VLrms noted as in chapter 7?
What is the calculated angular frequency VLrms noted as in chapter 7?
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What is indicated as the total voltage in the rms values in 7.8 (c)?
What is indicated as the total voltage in the rms values in 7.8 (c)?
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Which of the following represents the result of dV/dt as calculated in 8.1 (b)?
Which of the following represents the result of dV/dt as calculated in 8.1 (b)?
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What is the speed of light in vacuum?
What is the speed of light in vacuum?
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What is the photon energy for a wavelength of λ = 1 m?
What is the photon energy for a wavelength of λ = 1 m?
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What is the relationship between the electric field E and the magnetic field B?
What is the relationship between the electric field E and the magnetic field B?
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Which of the following represents the energy density in the E field?
Which of the following represents the energy density in the E field?
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What is the value of B0 when E0 is equal to 153 N/C?
What is the value of B0 when E0 is equal to 153 N/C?
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What is the wavelength for a frequency of ν = 10^9 Hz?
What is the wavelength for a frequency of ν = 10^9 Hz?
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What is the energy density in the B field at a magnetic field strength of 400 nT?
What is the energy density in the B field at a magnetic field strength of 400 nT?
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What does a wavelength of λ = 5 × 10^-7 m correspond to in terms of photon energy?
What does a wavelength of λ = 5 × 10^-7 m correspond to in terms of photon energy?
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Study Notes
Chapter 1
- Electric Force (1.1): Repulsive force of 1.16 × 10³ N at 12 cm.
- Electric Force Ratio (1.3): Ratio of electric to gravitational force is 2.4 × 10³⁹.
- Charge Conservation (1.5): Charge is neither created nor destroyed, only transferred.
- Electric Fields (1.8): 5.4 × 10⁻⁸ N/C along OB, 8.1 × 10⁻³ N along OA.
- Dipole Moment (1.9): Total charge zero, dipole moment 10⁻⁴ N m.
- Charge Transfer (1.11): 2 × 10¹² charges transferred from wool to polythene, negligible mass change (2 × 10⁻¹⁸ kg).
- Electric Force Magnitude Relation (1.13): Charges 1 & 2 are negative, charge 3 positive. Particle 3 has highest charge to mass ratio.
- Electric Flux (1.15): Net charge inside a closed cube is zero (equal number of lines entering and leaving).
- Charge Calculations (1.16): Values of charge (a) 0.07 μC, (b) нет.
- Electric Field Calculations (1.17,1.18): Values of electric field strength in N m²/C.
- Charge Enclosed Calculations (1.19): Enclosed charge is the same in both cases (values in nC).
- Capacitance and Electric field strength (1.20 - 1.23): 1.45 × 10⁻³ C , 1.6 × 10⁸ N m²/C and further values.
Chapter 2
- Potential Difference (2.1): 10 cm, 40 cm from positive charge.
- Electric Potential (2.2): 2.7 × 10⁶ V.
- Electric Potential and Planes (2.3): Plane normal to AB, passing through midpoint has zero potential.
- Electric Field Strength (2.4, 2.5, 2.6): Values of electric field strength (in N/C, pF, V...).
- Capacitance (2.7 - 2.11): Capacitance values in pF, V , A.
- Current (2.12): Current values (in A) in a circuit with resistor.
- Time Calculation (2.13): Time calculation, involving charge values (in seconds).
Chapter 3
- Temperature (3.1, 3.2, 3.3, 3.4, 3.5): Values of temperature in ⁰C.
- Current Calculation (3.3 - 3.5): Current values in an electric circuit (in A) with CD components.
- Potential Difference (3.7): Values of potential difference in V.
- Current values (3.9): Current values (in A)
- Time Calculation (3.10): Time values in seconds related to current.
Chapter 4
- Magnetic Field Strength (4.1 - 4.4): Values of magnetic field strength in T, and a direction towards or away from north pole.
- Force calculation (4.5-4.8): Forces calculation (in N).
- Frequency and Magnetic field (4.9 - 4.13): Calculations of frequency (Hz) and magnetic field (in T).
Chapter 5
- Torque (5.1-5.6): torque values (J T⁻¹ or similar) and specific situations for stabilization (parallel or antiparallel).
- Energy Calculations (5.2-5.4): Energy values (J) pertaining to magnetic field.
Chapter 6
- Current Fields & Directions (6.1): Field line directions (e.g., along various paths in a circuit).
Chapter 7
- Voltage (7.1-7.3): Values of voltage (in V).
- Electrical Power (7.4 - 7.5): Values of electrical power (in W).
- Current (7.2): Value of current in amps.
- Capacitance (6.4): Value in Volts (V).
- Power (6.5 - 6.7): Values (in W, Wb...).
Chapter 8
- Capacitor/Electric Field (8.1): Current through a capacitor.
- E and B fields (8.2): Electric and Magnetic fields with their characteristics .
- Speed Calculations (8.3-8.4): Calculations of speed (m/s), wavelength values (in meters).
- Electric Field strength (8.5 -8.7): Values in N/C.
- Photon Energy (8.8 ,8.9 , 8.10 , 8.11): calculations of energy with various wavelength values.
- Energy DensityCalculations (8.10 ,8.11): Calculations of energy density.
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Description
This quiz covers the fundamental concepts of electric forces, charge conservation, and electric fields as discussed in Chapter 1 of your physics textbook. Test your understanding of topics like electric force ratios, dipole moments, and electric flux calculations. Prepare to challenge your knowledge on charge interactions and properties!
