Final answer:
To determine the total power drawn from the power supply, calculate the power of each bulb and add them up. The current drawn from the power supply can be found by dividing the power of each bulb by the voltage.
Step-by-step explanation:
When multiple bulbs are connected in parallel to a power supply, they each have the same voltage across them.
To determine the total power drawn from the power supply, you need to calculate the power of each bulb and then add them up.
For example, the power of a 25 W bulb is given by P = IV, where P is the power, I is the current, and V is the voltage.
The current can be calculated using Ohm's Law, I = V/R, where R is the resistance of the bulb. Once you have calculated the power for each bulb, you can add them up to get the total power drawn from the power supply.
To find the current drawn from the power supply, you can use the equation P = IV again.
Rearranging the equation gives I = P/V. So you can divide the power of each bulb by the voltage to find the respective current.
Once you have the current for each bulb, you can add them up to get the total current drawn from the power supply.