General Physics 2

What is the SI unit of electric charge?

• Volt

• Coulomb

• Ampere

• Ohm

Ohm’s law states that voltage is equal to:

• Current divided by resistance

• Current multiplied by resistance

• Power divided by resistance

• Charge divided by time

The power dissipated in an electrical circuit is given by:

• P = VI

• P = V/R

• P = I/R

• P = IR

What is the function of a capacitor in an electrical circuit?

• Converts electrical energy into mechanical energy

• Stores electric charge

• Converts electrical energy into light

• Controls the current flow

Which of the following materials is a good conductor of electricity?

• Rubber

• Copper

• Wood

• Glass

The magnetic field inside a solenoid is strongest at:

• The edges

• The center

• The outside

• The surface

According to Faraday’s Law, an electromotive force is induced when:

• A charged particle moves through a magnetic field

• The magnetic flux through a loop changes

• A magnetic field is constant

• A circuit is open

Which of the following electromagnetic waves has the highest frequency?

• Gamma rays

• Radio waves

• Microwaves

• Infrared waves

The speed of light in a vacuum is approximately:

• 3.0 × 10⁵ m/s

• 3.0 × 10⁸ m/s

• 3.0 × 10⁶ m/s

• 3.0 × 10¹² m/s

Which of the following best describes total internal reflection?

• Light bends as it enters a different medium

• Light is completely reflected within a medium when the angle exceeds the critical angle

• Light is absorbed completely by a surface

• Light changes its wavelength after reflection