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What does electrical energy equal?
Electrical energy is the ability of an electrical system to do work. It is measured in joules and is equal to the product of power (in watts) and time (in seconds). In mathematical terms, electrical energy equals power multiplied by time.
What do you multiply to get electrical energy?
Electrical energy = (power) multiplied by (time) or (voltage across a component or circuit) times (current through it) times (time)
What is the effiency of a motor that converts100j of electrical energy into 70j of useful kinetic energy?
The efficiency of the motor can be calculated as the ratio of useful output energy to input energy. In this case, the efficiency would be 70J (useful kinetic energy) divided by 100J (electrical energy) multiplied by 100% to get a percentage. So, the efficiency of the motor is 70%.
How can you describe electrical energy?
Electrical energy is the energy in electricity - mainly in electrical currents.
What are the three electrical appliances that converts 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
How formed electrical energy?
Electrical energy can be formed by solar, wind or hydro energy. This energy is transformed into electrical energy.
What are the conversions of electrical energy give 5 examples?
-- 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 conversion of electrical energy in to mechanical energy?
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.
How capacitor deliver electrical energy constantely?
A capacitor can't deliver electrical energy 'constantly'. Much like a battery, electrical energy can be stored in it, and then delivered later. The capacitor only stores some definite amount of energy ... equal to 1/2 of its capacitance multiplied by the square of the voltage to which it's charged ... and later, after it has delivered that amount of energy, it delivers no more without being charged again.
5 examples of transformation of 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
Which electrical device changes electrical energy into mechanical energy?
The motor changes electrical energy into mechanical (torque) energy.
What are two common energy conversions involving electrical energy?
Electrical energy to sound energy with an alarm clock Electrical energy to light energy with a lamp
