What current flows through a 100 W light bulb connected to a 120 V outlet?
or current=100/120=0.833 amperes.
How much energy can an electric motor produce when it is plugged into a 110 V outlet with a total charge of 50 C passing through the motor?
How much energy can an electric motor produce when it is plugged into a 110 V outlet with a total charge of 50 C passing through the motor? E =VQ = 110 X 50 = 550 The energy passing through the motor is 550 J.
What happens to a wire if a high current is passed through it?
Two effects may occur during high current flow: 1) the wire may become overheated to the point that surface oxidation or even evaporation may take place, 2) at the connection points at each end of the wire, especially if the terminations are of a different type of metal than the wire, some atoms may migrate into or out …
What is the relation between power and resistance?
Power is P=IV. You can only relate it to resistance if you decided to fix one and replace the other by Ohm’s law. Ohm’s law states that voltage across a resistor is linearly proportional to the current flowing through it, or V=IR. This can be arranged to say that current is inversely proportional to voltage, or I=VR.
How do you find resistance from power?
Ohm’s law equation (formula): V = I × R and the power law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. V = voltage, electric potential difference Δ V or E = electromotive force (emf = voltage).
Do capacitors in parallel have same charge?
Capacitors in Parallel. Figure 2a shows a parallel connection of three capacitors with a voltage applied. Thus the capacitors have the same charges on them as they would have if connected individually to the voltage source. The total charge Q is the sum of the individual charges: Q = Q1 + Q2 + Q3.
Do capacitors in series have same voltage?
When capacitors are connected in series and a voltage is applied across this connection, the voltages across each capacitor are generally not equal, but depend on the capacitance values.