Question

The table lists the time it takes for an amount of charge to pass through a point in a wire.

A 3 column table with 4 rows. The first column is labeled current with entries W, X, Y, Z. The second column is labeled charge in coulombs with entries 18, 10, 15, 12. The last column is labeled time in seconds with entries 4.3, 3.2, 3.3, 3.1.

Janelle is exploring the relationship between the brightness of a light bulb and the current that powers it. When applying these currents to the same bulb, the bulb is brighter when the current is greater.

Which lists the currents in the order of the bulb brightness they cause from most bright to least bright?

W, Y, X, Z
Y, W, Z, X
W, Y, Z, X
X, Z, W, Y

Answer 1

Compute current = charge / time:
- W: 18 / 4.3 ≈ 4.19 A
- X: 10 / 3.2 = 3.13 A
- Y: 15 / 3.3 ≈ 4.55 A
- Z: 12 / 3.1 ≈ 3.87 A

From most to least bright (largest to smallest current): Y, W, Z, X.