Electricity Cheat Sheet - Specific resistance (resistivity) if l → length of conductor. Web electric current cheat sheet. If we connect the conductor to a battery, potential difference between the ends of the conductor occurs. Effect of stretching of wire on resistance. Electric current and flow of charge. The rate of flow of charge i = \(\frac{d q}{d t}\) unit → ampere. In the formula for resistance, the first formula has current and the second one has length of the resistor. [charge]=coulomb=c [electric force]=newton=n [electric field]=[force]/[charge]=n/c=[voltage]/[distance]=volt/meter= v/m [energy]=newton.meter=joule=j [voltage]=[energy]/[charge]=j/c=volt=v [capacitance] = [charge]/[voltage]=coulomb/volt=c/v=farad=f [current] = [charge]/[time]=coulomb/sec.=c/s=amp=a [resistance] = [voltage]/[current]=volt/amp. If physical conditions (temperature, pressure etc.) of the conductor remaining unchanged then v ∝ i or v = ri. Resistance (r) v/i or ρ l/a.
[charge]=coulomb=c [electric force]=newton=n [electric field]=[force]/[charge]=n/c=[voltage]/[distance]=volt/meter= v/m [energy]=newton.meter=joule=j [voltage]=[energy]/[charge]=j/c=volt=v [capacitance] = [charge]/[voltage]=coulomb/volt=c/v=farad=f [current] = [charge]/[time]=coulomb/sec.=c/s=amp=a [resistance] = [voltage]/[current]=volt/amp. Effect of stretching of wire on resistance. Electric battery is a device that converts chemical energy to the electrical energy. Web electric current cheat sheet. Electric current and flow of charge. If we connect the conductor to a battery, potential difference between the ends of the conductor occurs. The rate of flow of charge i = \(\frac{d q}{d t}\) unit → ampere. If physical conditions (temperature, pressure etc.) of the conductor remaining unchanged then v ∝ i or v = ri. Resistance (r) v/i or ρ l/a. In the formula for resistance, the first formula has current and the second one has length of the resistor. Specific resistance (resistivity) if l → length of conductor.