Physics

Electrostatics

100

Which law states the force between electric charges?

Coulomb's Law 

200

_____ is a branch of physics that deals with the study of stationary electric charges

Electrostatics 

300

As per Coulomb's law, the force of attraction or repulsion between two point charges us directly

Product of the magnitude of charges

400

Which of the following statements is false for a perfect conductor?

A.) The surface of the conductor is an equipoten-tial surface.

B.) The electric field just outside the surface of a conductor is perpendicular to the surface

C.)The charge carried by a conductor is always uniformly distributed over the surface of the conductor

D.)None of these

D.) None of these

500

When you touch a charged body, the charge flows through you into the earth. This is called

Earthing

Generators and Motors

100

The strength of an electromagnet can be affected by...

Changing the current in the wire, adding more coils, and increasing the mass of the iron core 

200

Bob made an electromagnet but it was very weak. How can he make it stronger?

use thicker wire

300

A ____ is a current-carrying coil of wire with many loops

Solenoid

400

How do electromagnets differ from regular magnets?

They can be turned off and on, Their polarity can be reversed, and Their strength can be changed

500

The flow of electrical energy start at the ___ side of the d-cell.

Negative

Electromagnetism waves

100

Electromagnetic waves vary in

Wavelength and Frequency 

200

To Calculate the frequency of an electromagnetic wave, you need to know the speed of the wave

Wavelength

300

Lights acts like..

Both a wave and a particle 

400

The full range of frequencies of electromagnetic radiation is called

The electromagnetic spectrum 

500

The wave with the longest wavelengths in the electromagnetic spectrum are 

Radio waves

Sound

100

The number of wavelengths that pass a point each second

Frequency

200

What does the pitch depend on?

Frequency 

300

Sound waves move faster in what temperature

Heat

400

Sound travels fastest through what material?

A metal such as iron

500

The average frequency range for human hearing is

20-20000 Hz

Refraction

100

A student placed a pencil in a cup of water.  The pencil appears broken because light-

bends when it passes through water

200

Why does the lower part of the child appear so much different in size from the upper part?

The light rays that travel through water and then into air are refracted.

300

What do we call this tool that separates white light into the colors of the Visible Spectrum?

Prism

400

____ are thick in the middle and thin at the edges.

Convex lenses

500

When light waves move from passing through air to passing through a glass lens when happens to them?

They slow down and change direction