Question

If three bulbs 30 W, 40 W, and 90 W are connected in parallel to a 120-V source, calculate the current through each bulb. 5 A А The current through the 30-W bulbis The current through the 40-W bulb is The current through the 90-W bulb is A А.

Answer 1

The current through the 30-W bulb is 0.25 A, the current through the 40-W bulb is 0.33 A, and the current through the 90-W bulb is 0.75 A.

Step-by-step explanation:

To find the current through each bulb in a parallel circuit, we can use Ohm's Law which states that current (I) is equal to voltage (V) divided by resistance (R).

1. The current through the 30-W bulb is 0.25 A.
2. The current through the 40-W bulb is 0.33 A.
3. The current through the 90-W bulb is 0.75 A.

The total current flowing in a parallel circuit is equal to the sum of the individual currents through each branch.