A flashlight bulb is connected to two dry cells with an equivalent voltage of 4.50 V

I have a big Physics exam that I need help with ASAP. I will paste it below.

A flashlight bulb is connected to two dry cells with an equivalent voltage of 4.50 V. If the bulb draws a current of 12.0 mA (1000mA = 1A), its resistance is (2 points)

2.66 Ohms

266 Ohms

145 Ohms

540. Ohms

375 Ohms

A lens that is thicker in the middle and thinner on the ends is a (2 points)

converging lens

diverging lens

Assuming that something flows through wires when bulbs are lit in a circuit, is the direction of the flow the same in all the wires, or does it vary in different parts of the circuit? (2 points)

The direction of the charge flow is the same.

The direction of the charge flow varies in different parts.

Where does the charge come from that lights the bulbs during capacitor charging? (2 points)

From the batteries, wires, and bulbs

From the bulbs

From the batteries

From the wires

The focal length of a converging lens is 0.50 meters. An object is placed 1.0 meters from the lens. The distance between the lens and the image is (2 points)

0.50 m

0.25 m

1.0 m

1.5 m

What is the intensity of an electric field at a point where a 0.50 C charge experiences a force of 20. N?

Remember to identify all data (givens and unknowns), list equations used, show all your work, and include units and the proper number of significant digits to receive full credit. (5 points)

Type Answer Here

The velocity of waves having wavelength 0.643 m and frequency 3.25 E10 Hz is (2 points)

2.09 E10 m/s

50.5 E10 m/s

1.97 E10 m/s

5.05 E10 m/s

Is the conventional current flow the same direction as the flow of the electrons? (2 points)

Yes

The separation of white light into its component colors by means of a triangular prism is known as (2 points)

interference

dispersion

reflection