Mind map
Current Electricity
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Current Electricity
Potential Difference
- A.K.A Voltage
- Volt
- Scalar quantity
- V = W/Q
- W = work
- Q = charge
- Electromotive force (emf)
- A voltage that is applied to a circuit
Capacitance
- Electrical device that stores electric charge
- C = εA/d
- ε = permittivity
- A = common area
- d = distance between plates
- Energy stored in a capacitor
- W = (1/2)CV²
- Capacitors conduct A.C. but not D.C.
Electric current (I)
- Flow of electric charge
- Scalar quantity
- Ampere (A)
- Q = It
- Q = charge
- I = current
- t = time
- Ammeter
- Effects
- Chemical
- Magnetic
- Heating
- Joule's Law
- P = I²R
- P = power
- I = current
- R = resistance
- P = I²R
Domestic circuits
- Plugs
- Live wire
- Neutral wire
- Earth wire
- Two-pin plugs
- Do not need to be earthed
- Fuses
- Wire that will melt when current above a certain size passes through it
- Miniature circuit breakers
- Prevent electrocution or fire
- Residual current devices
- Plugs
kilowatt-hour (kWh)
- Energy (in kWh) = Power (in kW) x time (in h)
- Amount of energy used by a 1,000 watt appliance in one hour
Information
- Description
- This mind map outlines the main topics in current electricity. These include potential difference, capacitance, electric currents and domestic circuits. It is aimed at a leaving certificate student or someone who has an interest in learning more about current electricity.
- Created by
- tatemae.honne
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- History
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- Created by alex.examtime9373 · Jan 21, 2014
- Copied by tatemae.honne · Jan 21, 2014
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