Because thereâs nothing wrong with doing it as a hobby. Itâs also going to take you a long time to get to full-time status. It took me just shy of 3 years to get to the point where we completely replaced our household income with our photography income, and that was considered fast.
In a series circuit, the voltage across a resistor is directly proportional with its resistance (Et= I(Rint+R). That means in a series circuit the voltage across the resistor will increase when the resistance in increased, while the current will reduce. A power source has internal resistance (Rint) which will be in series with the resistor R. So even though your resistor is connected across the power supply, the internal resistance Rint is in series with it.
Explain in terms of atomic and electron movement, why resistance increases with temperature. 2. Electrons drift through the lattice, as temperature increases the lattice atoms vibrate more and this increases the probability of. collision and hence resistance to electrons has increased. 3. Calculate the resistance of an aluminum (Ï = 2.8x10-8 Î©m) wire that is 2.0 m long and of circular cross section. with a diameter of 1.5 mm. 3. 32 mÎ©. 4. Determine the length of tungsten (Ï = 5.6x10-8 Î©m) wire with a diameter of 1.0 mm that is used to make a 20.0 â¦ resistor.