**Answer;**

C. The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.

**Explanation**;

-If light bulbs are connected in parallel to a voltage source, the brightness of the individual bulbs remains more-or-less constant as more and more bulbs are added to the circuit.

-The current increases as more bulbs are added to the circuit and the overall resistance decreases. In addition, if one bulb is removed from the circuit the other bulbs do not go out. Each bulb is independently linked to the voltage source

The chemical formula is **CO2. **It shows how many elements of each is in this compound.

**Answer:**

3 x 10^ 8 m/s

**Explanation:**

Speed of wave = wavelength/time period

= 30000/0.0001

= 300000000 m/s

**Answer:**

The number of turns present in the loop are **625 turns.**

**Explanation:**

Given;

current on the rectangular loop, I = 6A

Dimension of the rectangular loop, L x B = 0.04 m × 0.08 m

Magnetic moment of the loop, Pm = 12 Am²

Area of the rectangular loop, A = L x B = 0.04 m × 0.08 m = 0.0032 m²

The magnetic moment of plane carrying coil/loop is given as;

Pm = NIA

Where;

N is the number of turns

A is the area of the loop

I is the current on the loop

Therefore, the number of turns present in the loop are **625 turns.**