energy charge voltage calculator
Convert energy and charge to voltage (and vice versa). Use V=E/Q or 2E/C for capacitors: handy for electronics and physics problems.
voltage from energy and charge
Use V = E / Q to discover voltage by knowing energy & charge. Long-term capability: to charge capacitors with stored energy. V = (x/2E/C). Deliver energy (J), charge (C), or capacitance (F) to be converted immediately.
Formula & Table Summary:
- \( V = \dfrac{E}{Q} \)
- \( E = QV \)
- \( E = \tfrac{1}{2} C V^{2} \Rightarrow V = \sqrt{\dfrac{2E}{C}} \)
- \( Q = C V \)
Units: E (J), Q (C), C (F), V (V). Convert prefixed units to base units first (mJ→J, µF→F).
coulombs to volts
EnergyChargeVoltage Calculator is a conversion tool relating the stored energy (J), charge (C), capacitance (F) and voltage (V). Express the energy per charge, or (in the case of capacitors) as V = (sqrt{2 E / C}). Introduce two compatible immediately calculate voltage and other related quantities using values (E.g., E and Q or E and C).
charge to voltage calculator
| Energy (J) | Charge (C) | Capacitance (F) | Calculation | Voltage (V) |
|---|---|---|---|---|
| 10.0 | 2.0 | — | V=E/Q=10/2 | 5.00 |
| 0.005 | — | 1e-6 | V=√(2E/C) | 100.0 |
| 0.02 | 0.01 | — | V=E/Q=0.02/0.01 | 2.00 |
| 5.0 | — | 1e-3 | V=√(2×5/1e-3) | 100.0 |
| — | 0.5 | 2e-6 | V=Q/C=0.5/2e-6 | 250000.0 |
Frequently Asked Questions - energy charge voltage calculator:
How do I get voltage from energy and charge?
Use V = E / Q where E is joules and Q is coulombs.
How to get voltage to store energy in a capacitor?
Use V = sqrt(2E/C) where C is capacitance in farads.
What if I know Q and C?
Use V = Q / C.
How to compute stored energy from V and C?
Use E = 1/2 × C × V^2.
What units should I use?
Energy in joules (J), charge in coulombs (C), capacitance in farads (F), voltage in volts (V).
Can I use millifarads or microfarads?
Yes — convert units to farads first (µF → F = µF ×1e-6).
What if E or Q is zero?
If Q=0 voltage is undefined; if E=0 then V=0 for any finite Q or C.
Is this valid for batteries?
V=E/Q is a basic relation but batteries have internal resistance and inefficiencies to consider.
Why is capacitor voltage sqrt relation?
Because capacitor energy depends on V^2: E = 1/2 C V^2, so V ∝ sqrt(E/C).
Can I store large energy in small capacitors?
You need very high voltage; check capacitor voltage rating and safety limits.
Related Posts
Convert KW to HP Calculator
Easily convert kilowatts (kW) to horsepower (HP) using this fast and accurate online calculator. Works for both mechanical and electrical horsepower conversions.
line current calculator
Convert power, phase current or voltage into line current for DC, single-phase and three-phase (wye/delta) systems. Includes formulas, examples, and FAQs.
Current Density Calculator
Calculate current density easily using this tool. Enter current (I) and conductor cross-sectional area (A) to find J = I/A in A/m² or A/mm² for safe wiring design.
Pump Power Calculator
Calculate hydraulic and motor power for pumps using flow rate, head, efficiency, and fluid density. Ideal for engineers and system designers in water and industrial applications.
Capacitor Power Calculator
Calculate the capacitor reactive power in AC circuits using voltage and capacitance. Ideal for engineers, technicians, and students designing reactive power systems.
Full load current calculator
Calculate the full load current of motors or electrical equipment from power, voltage, and power factor. Works for single-phase and three-phase systems.