EmSAT EmSAT Physics 6

Question 1

What causes a magnetic field around a current-carrying wire?

Accepted Answer

Moving electric charges (current)

Answer

Static electric charge

Answer

Gravitational force

Answer

Nuclear force

Question 2

What is the principle behind an electric generator?

Accepted Answer

Electromagnetic induction

Answer

Ohm's law

Answer

Nuclear fission

Answer

Conservation of charge

Question 3

What is the formula for pressure?

Accepted Answer

P = F/A

Answer

P = mv

Answer

P = F × A

Answer

P = mg

Question 4

What does Archimedes' principle state?

Accepted Answer

The buoyant force equals the weight of fluid displaced

Answer

An object floats if its density is greater than the fluid

Answer

Pressure increases with depth linearly

Answer

Fluids exert equal pressure in all directions

Question 5

What is absolute zero on the Kelvin scale?

Accepted Answer

0 K

Answer

−100 K

Answer

−273 K

Answer

273 K

Question 6

What happens to the volume of a gas when pressure increases at constant temperature?

Accepted Answer

Volume decreases

Answer

Volume increases

Answer

Volume stays the same

Answer

Volume doubles