Energy dissipated/used by a load =
(voltage across the load) x (current through it) x (time)
(voltage squared) x (time) divided by (load impedance/resistance)
(current squared) x (load impedance/resistance) x (time)
(power) x (time)
In Figure 50.3, the orientation of the current in the wire produces a transformation of electrical energy into magnetic energy. The flow of current generates a magnetic field around the wire, leading to the conversion of electrical energy to magnetic energy.
Electrical energy is the energy in electricity - mainly in electrical currents.
Electrical energy can be formed by solar, wind or hydro energy. This energy is transformed into electrical energy.
Three electrical appliances that convert electrical energy are: Electric heater - converts electrical energy into heat energy Light bulb - converts electrical energy into light energy Electric fan - converts electrical energy into mechanical energy for moving air
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.
-- An LED converts electrical energy to light energy. -- A coffee percolator converts electrical energy to heat energy. -- An old-fashioned light bulb converts electrical energy to light energy and heat energy, both at the same time. -- A loudspeaker or ear-bud converts electrical energy to sound energy. -- An electric motor converts electrical energy to kinetic energy. -- A radio transmitter converts electrical energy to low-frequency electromagnetic energy. -- A battery sitting in its charger converts electrical energy to chemical energy.
The motor changes electrical energy into mechanical (torque) energy.
TV- Electrical energy to light and sound energy Radio and stereo - Electrical energy to sound energy Fan- electrical energy to mechanical energy Toaster - Electrical energy to heat energy Light bulb- Electrical energy to Light energy Battery or cell - Chemical energy to electrical energy
electrical energy to sound energy ,electrical energy to mechanical energy
Electrical energy to sound energy with an alarm clock Electrical energy to light energy with a lamp
Electrical energy to sound energy with an alarm clock Electrical energy to light energy with a lamp
Flashlight: electrical energy -> radiant energyBattery: chemical energy -> electrical energyToaster: electrical energy -> heat energyMotor: electrical energy -> kinetic energy