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We can calculate the amount of electrical power by an appliance or other electrical component by multiplying the voltage by the current. A kilowatt (kWh) is 1,000 watts or 1,000 joules of energy per second. On an electric bill you may have noticed the term kilowatt-hour. A kilowatt-hour means that one kilowatt of power has been used for one hour.
How much current flows through a 16 V battery that has a resistance of 5.1 Ω? 5. The human body offers a very small amount of resistance (let’s say 1 mΩ for argument).
• Precise definitions of voltage and current. • Using Ohm’s Law to calculate voltage, current, and resistance. • Plotting measured and calculated data on graphs.
Using Ohm’s Law, solve the following problems. Be sure to show all work. Formula: V (voltage)= I (current) X R (resistance) 1. What is the voltage if a resistance of 25 Ω produces a current of 250 amperes? 2. What is the current produced by a voltage of 240 V through a resistance of 0.2 Ω? 3.
Determine the total voltage (electric potential) for each of the following circuits below. 3. In a series circuit there is just one path so the charge R R flow is constant everywhere (charge is not lost or gained). CircuitB was made by adding 2 more identical resistors in series to circuitA I = 3 A. series?
• The circuit diagram below (Figure 1) shows two resistors of 120 Ω and 360 Ω, in an electric blanket, connected in series. When tested with meters, a graph of results is produced (Figure 2) showing the voltage and current relationship for individual resistors (V1 and V2).
Sketch the circuit diagram and calculate how many volts supply the CD player. V = ? R = 50 ohms I = 0.2 . ANSWER: V = 5 Volt. A 120-volt power source supplies a lamp with a resistance of 200 ohms. What is the current flow of the circuit? V = 120 VOLTS R = 20 OHMS I = ?
