Daily Questions Week of Feb. 24 to Feb. 28

February 24If you want to demonstrate that like charges repel,

it would be best to ______.A. Place two positively charged objects near each

other.B. Place two neutral objects near each other.

C. Place one positive and one negative object near each other.

D. Place one negative and one neutral object near each other.

If lightning strikes a house, the lightning rod on top will prevent damage because_____.

A. an electrical charge is not able to move through the rod.

B. the rod is an insulator and cannot receive an electrical charge.

C. the excess electrical charge will be conducted into the ground.

D. the rod will convert the excess electrical charge into air.

Feb. 25

I=V/R

This equation shows Ohm’s Law, which says current is equal to voltage divided by resistance. In what units is electrical current measured?

A. tesla B. joules C. ohms D. ampheres

February 26

How can electron flow in a wire be increased?

A. changing the color of the wire B. decreasing the length and increasing the

width of the wire C. increasing the length and decreasing the

width of the wire D. changing the direction of the wire

February 27

Darnell wants to know what charge a piece of cloth has. He notes that when it is near a positively charged object, it attracts the object. The cloth also repels a negatively charged object. He should classify the charge of the cloth as

A. negative B. neutral C. positive D. uncharged

Feb. 28

Feb. 24-A. Place two positively charged objects near each other. Like repels like.

Feb. 25-C. the excess electrical charge will be conducted into the ground.

Feb. 26-D. ampheres Feb. 27-C. increasing the length and decreasing

the width of the wire. A longer, thinnner wire will have more resistance.

Feb. 28-A. negative. Like repels like.

Answer Key: