That's not what PF is for. Hire a lawyer. Better: convince yourselfjoshqg said:
. we change the playing field: where it says 150 A, read 150 mA, and proceed with the exercise.Ya we're allowed to use mA for this question, just didn't want any confusion.BvU said:
Are the numbers quoted meant for part a) ?
To calculate the resistance of each light bulb, you will need to use Ohm's Law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage is 120V and the current is the total current of the circuit divided by the number of light bulbs (I = I(tot)/3). Once you have the current, you can use the resistance formula (R = V/I) to calculate the resistance of each light bulb.
To determine the total current in the circuit, you will need to use Kirchhoff's Current Law, which states that the sum of the current entering a junction is equal to the sum of the current leaving the junction. In this case, the current entering the junction is 120V, and the current leaving the junction is the sum of the currents through each light bulb. Therefore, the total current in the circuit is 120V divided by the sum of the resistances of the three light bulbs.
To draw a circuit diagram for a 120V circuit with 3 light bulbs, you will need to use standard circuit symbols. The circuit should include a power source (120V), three light bulbs, and wires connecting them. The light bulbs should be connected in parallel, meaning they are connected to the same voltage source but have their own individual paths for current to flow.
Yes, as long as the light bulb's voltage rating is equal to or greater than the voltage of the circuit (in this case, 120V). It is important to check the voltage rating of the light bulb to ensure it can safely handle the voltage of the circuit.
To calculate the power consumption of each light bulb, you will need to use the power formula (P = V x I). In this case, the voltage is 120V and the current can be calculated using the total current in the circuit (as determined in question 2). Once you have the current, you can use the power formula to calculate the power consumption of each light bulb.
