問題一覧
1
Connect it to a circuit with just a resistor (no power supply)
2
When a capacitor is connected to a resistor, the resistor provides a path for charge to flow between plates, This causes charge on a fully charged capacitor to flow from the positive plate, around the circuit to the negative plate , As charge flows, the potential difference across the plates decreases and the electric field strength decreases, This decreases the rate of charge flow away from the circuit until it is fully discharged, once the p.d. across both plates is zero
3
Initial Charge Stored, Q⁰ (Coulombs, C) × e^(-Time, t / Resistance × Capacitance)
4
ln|2| × Resistance, R (Ohms) × Capacitance, C (Farads, F)
5
Time Constant is the product of resistance and capacitance, This means that with each time constant, the charge will decrease by a constant fraction
6
Initial Potential Difference, V0 (Volts, V) × e^(-Time, t / Resistance, R × Capacitance, C)
7
Initial Current, I0 (Amps, A) × e^(-Time, t / Resistance, R × Capacitance, C)
8
Voltage equation is found by substituting the equation for capacitance (Q = CV) into the equation for charge of a (dis)charging capacitor, Current equation is found by substituting the Ohm's law equation (V = IR) into the equation for Voltage of a (dis)charging capacitor
9
Initial Current, I0 = Initial Potential Difference, V0 / Resistance, R
10
The product of resistance and capacitance, Time to discharge a capacitor to 1/e (≈ 37%) of its initial value of charge, current, or voltage, Time to charge a capacitor to (1 - 1/e) (≈63%) of its maximum value of charge or voltage
11
From -1/Gradient, where the gradient is taken from a graph of lnQ over time
All Maths Notation
All Maths Notation
Oluwole Akande · 72問 · 2年前All Maths Notation
All Maths Notation
72問 • 2年前Financial Ratio Analysis - Liquidity Ratios and Gearing
Financial Ratio Analysis - Liquidity Ratios and Gearing
Oluwole Akande · 9問 · 3年前Financial Ratio Analysis - Liquidity Ratios and Gearing
Financial Ratio Analysis - Liquidity Ratios and Gearing
9問 • 3年前Topic 6 - Further Mechanics - Glossary
Topic 6 - Further Mechanics - Glossary
Oluwole Akande · 8問 · 2年前Topic 6 - Further Mechanics - Glossary
Topic 6 - Further Mechanics - Glossary
8問 • 2年前Command Words
Command Words
Oluwole Akande · 26問 · 2年前Command Words
Command Words
26問 • 2年前Circuit Symbols
Circuit Symbols
Oluwole Akande · 15問 · 2年前Circuit Symbols
Circuit Symbols
15問 • 2年前Topic 4 - Materials - Upthrust and Viscosity
Topic 4 - Materials - Upthrust and Viscosity
Oluwole Akande · 5問 · 2年前Topic 4 - Materials - Upthrust and Viscosity
Topic 4 - Materials - Upthrust and Viscosity
5問 • 2年前Topic 5 - Waves and Particle Nature of Light - Ray Diagrams
Topic 5 - Waves and Particle Nature of Light - Ray Diagrams
Oluwole Akande · 5問 · 2年前Topic 5 - Waves and Particle Nature of Light - Ray Diagrams
Topic 5 - Waves and Particle Nature of Light - Ray Diagrams
5問 • 2年前Topic 8 - Nuclear and Particle Physics - Linear Accelerator and Particle Detectors
Topic 8 - Nuclear and Particle Physics - Linear Accelerator and Particle Detectors
Oluwole Akande · 14問 · 2年前Topic 8 - Nuclear and Particle Physics - Linear Accelerator and Particle Detectors
Topic 8 - Nuclear and Particle Physics - Linear Accelerator and Particle Detectors
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Topic 10 - Space - Trigonometric Parallax
Oluwole Akande · 8問 · 2年前Topic 10 - Space - Trigonometric Parallax
Topic 10 - Space - Trigonometric Parallax
8問 • 2年前Topic 7 - Electric and Magnetic Fields - Glossary
Topic 7 - Electric and Magnetic Fields - Glossary
Oluwole Akande · 7問 · 2年前Topic 7 - Electric and Magnetic Fields - Glossary
Topic 7 - Electric and Magnetic Fields - Glossary
7問 • 2年前Chapter 7 - Electric and Magnetic Fields - Coulomb's Law
Chapter 7 - Electric and Magnetic Fields - Coulomb's Law
Oluwole Akande · 7問 · 2年前Chapter 7 - Electric and Magnetic Fields - Coulomb's Law
Chapter 7 - Electric and Magnetic Fields - Coulomb's Law
7問 • 2年前Chapter 7 - Electric and Magnetic Fields - Electric Field Strength
Chapter 7 - Electric and Magnetic Fields - Electric Field Strength
Oluwole Akande · 11問 · 2年前Chapter 7 - Electric and Magnetic Fields - Electric Field Strength
Chapter 7 - Electric and Magnetic Fields - Electric Field Strength
11問 • 2年前Chapter 7 - Electric and Magnetic Fields - Electric Potential
Chapter 7 - Electric and Magnetic Fields - Electric Potential
Oluwole Akande · 12問 · 2年前Chapter 7 - Electric and Magnetic Fields - Electric Potential
Chapter 7 - Electric and Magnetic Fields - Electric Potential
12問 • 2年前問題一覧
1
Connect it to a circuit with just a resistor (no power supply)
2
When a capacitor is connected to a resistor, the resistor provides a path for charge to flow between plates, This causes charge on a fully charged capacitor to flow from the positive plate, around the circuit to the negative plate , As charge flows, the potential difference across the plates decreases and the electric field strength decreases, This decreases the rate of charge flow away from the circuit until it is fully discharged, once the p.d. across both plates is zero
3
Initial Charge Stored, Q⁰ (Coulombs, C) × e^(-Time, t / Resistance × Capacitance)
4
ln|2| × Resistance, R (Ohms) × Capacitance, C (Farads, F)
5
Time Constant is the product of resistance and capacitance, This means that with each time constant, the charge will decrease by a constant fraction
6
Initial Potential Difference, V0 (Volts, V) × e^(-Time, t / Resistance, R × Capacitance, C)
7
Initial Current, I0 (Amps, A) × e^(-Time, t / Resistance, R × Capacitance, C)
8
Voltage equation is found by substituting the equation for capacitance (Q = CV) into the equation for charge of a (dis)charging capacitor, Current equation is found by substituting the Ohm's law equation (V = IR) into the equation for Voltage of a (dis)charging capacitor
9
Initial Current, I0 = Initial Potential Difference, V0 / Resistance, R
10
The product of resistance and capacitance, Time to discharge a capacitor to 1/e (≈ 37%) of its initial value of charge, current, or voltage, Time to charge a capacitor to (1 - 1/e) (≈63%) of its maximum value of charge or voltage
11
From -1/Gradient, where the gradient is taken from a graph of lnQ over time