Podcast
Questions and Answers
A long, straight wire carries a current of 10 A. At what distance from the wire is the magnetic field strength 0.01 T?
A long, straight wire carries a current of 10 A. At what distance from the wire is the magnetic field strength 0.01 T?
A resistor, a capacitor, and an inductor are connected in series to a voltage source. Which of the following is true at resonance?
A resistor, a capacitor, and an inductor are connected in series to a voltage source. Which of the following is true at resonance?
A solenoid has 500 turns, a length of 0.5 m, and a radius of 0.05 m. What is the magnetic field strength at the center of the solenoid if the current is 5 A?
A solenoid has 500 turns, a length of 0.5 m, and a radius of 0.05 m. What is the magnetic field strength at the center of the solenoid if the current is 5 A?
A resistor has a resistance of 10 ohms at 20°C and 20 ohms at 100°C. What is the temperature coefficient of resistance of the resistor?
A resistor has a resistance of 10 ohms at 20°C and 20 ohms at 100°C. What is the temperature coefficient of resistance of the resistor?
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A Faraday's cup electrometer has a capacitance of 100 pF. What is the potential difference across the electrometer when a charge of 100 μC is deposited on it?
A Faraday's cup electrometer has a capacitance of 100 pF. What is the potential difference across the electrometer when a charge of 100 μC is deposited on it?
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Study Notes
Physics 2 Final Exam Overview
- The exam consists of four sections: Multiple Choice Questions (Concept), Multiple Choice Questions (Calculation), Written Calculations, and Bonus Questions.
Exam Structure
- Multiple Choice Questions (Concept): 4 marks, 4 questions, focusing on conceptual understanding
- Multiple Choice Questions (Calculation): 16 marks, 8 questions, requiring calculations and problem-solving skills
- Written Calculations: 10 marks, 4 questions, assessing in-depth calculation skills
- Bonus Questions: 5 marks, 5 questions, covering basic concepts and formulas
Topics Covered
Current and Resistance
- Electric current: flow of charged particles, SI unit ampere (A)
- Resistance: opposition to current flow, SI unit ohm (Ω)
- Factors affecting resistance: material, length, cross-sectional area, temperature
EMF and Direct Current Circuits
- Electromotive Force (EMF): potential difference between two points, SI unit volt (V)
- Direct Current (DC) circuits: series and parallel connections, Kirchhoff's laws
- Circuit analysis: current, voltage, and resistance relationships
Magnetic Fields and Forces
- Magnetic fields: created by electric currents, described by Biot-Savart law and Lorentz force equation
- Magnetic field strength: measured in tesla (T), magnetic field lines and flux
- Forces on moving charges: Lorentz force, magnetic braking, and Fleming's left-hand rule
Sources of Magnetic Fields
- Current loops: magnetic field strength and direction
- Solenoids: magnetic field strength, direction, and applications
- Toroids: magnetic field strength and direction
Faraday's Law of Induction
- Electromagnetic induction: changing magnetic flux induces EMF
- Faraday's law: mathematical description of electromagnetic induction
- Lenz's law: direction of induced EMF and current
Light and Optics
- Properties of light: wave and particle nature, speed, and electromagnetic spectrum
- Reflection and refraction: laws of reflection, total internal reflection, and Snell's law
- Lenses and optical instruments: image formation, magnification, and applications
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Description
Challenge your understanding of advanced physics concepts in this comprehensive final exam, covering topics such as current, resistance, electromotive force, direct current circuits, magnetic fields, and light and optics. Prove your mastery of complex calculations and conceptual questions.
