suppose we have a electrical circuit flow in a conductor, consider that its voltage is fixed. I need to get my concepts right, which one is right :

i) when resistance is high, the electron keep colliding the particles of the conductors, heat produce.

ii) the current is high, and the resistance is low, more charge and electrons flow in the conductor, frequency of colliding the conductors particles increase, heat is produce.

iii)if the both statements above re right, whihc is more powerful in creating heat?

Question

suppose we have a electrical circuit flow in a conductor, consider that its voltage is fixed. I need to get my concepts right, which one is right :

i) when resistance is high, the electron keep colliding the particles of the conductors, heat produce.

ii) the current is high, and the resistance is low, more charge and electrons flow in the conductor, frequency of colliding the conductors particles increase, heat is produce.

iii)if the both statements above re right, whihc is more powerful in creating heat?

ganeshie8 · Answer

refer Joule's First Law

kropot72 · Answer

Let P = power expended in the resistor, V = applied voltage and R = load resistance.
$$P=\frac{V ^{2}}{R}$$
If V is fixed, the power expended in the resistor is inversely proportional to the value of the resistor. For example if the resistor value is halved the power will double.

anonymous · Answer

p = v²/r = Ir ? that mean both current and resistance contribute the same effect to heat?

kropot72 · Answer

$$P=I ^{2}R$$

anonymous · Answer

oh  i c

anonymous · Answer

ok both will produce Heat , and we can't determine which one will be greater until we know Quantities