EOC Physics 3

Question 1

What is the SI unit of electric current?

Accepted Answer

Ampere

Answer

Volt

Answer

Watt

Answer

Ohm

Question 2

According to Ohm's Law, if voltage doubles while resistance stays constant, what happens to current?

Accepted Answer

Current doubles

Answer

Current is halved

Answer

Current stays the same

Answer

Current quadruples

Question 3

Which law states that the total current entering a junction in a circuit equals the total current leaving it?

Accepted Answer

Kirchhoff's Current Law

Answer

Ohm's Law

Answer

Kirchhoff's Voltage Law

Answer

Faraday's Law

Question 4

What happens to the resistance of a metallic conductor as its temperature increases?

Accepted Answer

Resistance increases

Answer

Resistance decreases

Answer

Resistance stays constant

Answer

Resistance becomes zero

Question 5

A magnet is moved rapidly into a coil of wire. What is produced in the coil?

Accepted Answer

An induced electric current

Answer

A static charge

Answer

A magnetic monopole

Answer

Gravitational force

Question 6

In the photoelectric effect, what must increase for electrons to be ejected from a metal surface?

Accepted Answer

Frequency of light

Answer

Intensity of light

Answer

Wavelength of light

Answer

Duration of light exposure

Question 7

Which of the following describes nuclear fission?

Accepted Answer

A heavy nucleus splits into two smaller nuclei releasing energy

Answer

Two light nuclei combine to form a heavier nucleus

Answer

An electron is emitted from a nucleus

Answer

A proton is converted into a neutron