Answer: when we say an appliance uses up electricity we’re really saying? electron kinetic energy is changed into heat. the electric field around an isolated electron has a certain strength 1cm from the electron.
What is really meant when we say an appliance?
Question: When We Say Appliance “uses Up” Electricity, We Really Are Saying That:a. The Main Power Supply Voltage Is Loweredd. Electrons Are Taken Out Of The Circuit And Placed Somewhere Elsee. Electron Kinetic Energy Is Changed Into Heat.
What is it that the appliance actually uses up and what becomes of it?
what is tit that the appliance actually consumes, and what becomes of it? An electric device does not “use up” electricity, but transforms it from one form to another. Only a small percentage of the electric energy fed into a common lightbulb is transformed into light.
When we say an appliance uses up electricity we are actually saying that quizlet?
9. When we say an appliance “uses up electricity,” we really are saying that: electron kinetic energy is changed into heat.
Why are the wingspans of birds a consideration?
5) Why is the wingspan of birds a consideration in determining the spacing between parallel wires in a power line? Ans. If the wingspan of birds is sufficient to span the wires that differ in electric potential, then the bird acts as a path for current to flow from the high voltage wire to the low voltage wire.
What is the current in a 60 W bulb connected to a 120 V source?
Question: Problem 3 A 60-W (60 Watts) light bulb connected to a 120-V (120 Volts) source draws a current of Answer: 0.5 A (0.5 Amps).
What could you do to make the bulb give out more light?
There are a few ways to increase the applied voltage across a fixed resistance. You use a thicker wire, so that the resistance of the wire does not reduce the current through the light bulb. You use a higher wattage bulb.
Where do the electrons come from that produce heat and light?
These electrons are natural constituents of the atoms in the conductor (filament). The application of a voltage is required to get them moving, producing friction and current, light and heat. They come from the power company through the wires to your house.
What does not affect a material’s resistance?
Length and area affect resistance as well as type of material expressed with . Temperature does not affect resistance.
What is the net speed of electrons in a wire?
The individual electron velocity in a metal wire is typically millions of kilometers per hour. In contrast, the drift velocity is typically only a few meters per hour while the signal velocity is a hundred million to a trillion kilometers per hour.
Why are household appliances never connected in series?
Household appliances aren’t connected in series because if they were they would have to “share” the line voltage with the other appliances in the circuit. Each time an appliance was added to the circuit, the voltage available to run each appliance would go down, along with the current through each appliance.
Why don’t you feel the electric force on you all the time?
You don’t feel electric force in everyday life because almost every negative charge (electron) in the universe is nestled up close to a positive charge (the nucleus of an atom). That equalizes (neutralizes) the electric force. That’s why we are not aware of it most of the time.
How does wetness affect the resistance of your body?
How does wetness affect the resistance of your body? It decreases the resistance of your body. What happens to the resistance of your skin when you perspire? the salf left from perspiration when wet lowers your skin resistance to a few hundred ohms or less.