copper wire is good conductor of heat but bulb is bad conductor of heat.
because in forward connection the internal field is in a direction of the main current so the current passes while in the backward connection it is reversed so no current passes
A Conductor like copper, conducts current or electricity while an Insulator works just the opposite it doesn't conduct current or electricity.
can heat form while heated
Because the magnetising current is very small, so the primary losses are insignificant, while there is no secondary current, so there are no secondary losses.
Copper has two oxides. Copper (I) oxide is red, while Copper (II) oxide is black.
no
The element is made of special high resistance wire so the power is dissipated in the element rather than the low resistance cord.Power(watts) = Resistance (ohms) X {Current(amperes)}squared
When it is heated it becomes less dense (i.e. lighter). The more dense (i.e. heavier) magma sinks while the less dense magma rises to the top. It will eventually cool again causing a convection current within the mantle.
Yes. While it isn't clear what device you are talking about, and different devices have different characteristic curves (for example, a straight line for a resistor), a voltage is required for a current to flow, so if there is no voltage, there won't be any current, either.
The copper particles stick to the soil, while the water continues to filter through the soil. Therefore the copper stays in the soil while the water does not.
graphite is a non metal and an element and because it is a weak conductor of electricity it lets electric current and heat flow through it and when electric current passes through it it faces resistance and glows.
Heated blankets are designed to be used overnight while sleeping, so there's little risk.