First Element Of Physics

Question 1

What is an insulator?

Answer 1

Any material that does not allow the flow of energy or charged electrons through it.

Examples-rubber, dry wood, plastic.

Question 2

What is a potentiometer?

Answer 2

Volume control on radio, dimmer switches

Changing the flow of energy.

Question 3

What is a transformer?

Answer 3

Increases or decreases voltage.

Question 4

What are electric filters?

Answer 4

Remove unwanted frequencies and increase wanted frequencies.

Question 5

What is a fuse?

Answer 5

Device that ‘blows’ when excess current flows through a circuit.
Also known as a circuit breaker or safety device.

Question 6

What is a rectifier?

Answer 6

Converts AC to DC

Question 7

What is an oscillator?

Answer 7

Produces a repetitive signal.

Question 8

What is an anode?

Answer 8

Positively charged electrode.

Current flows into anode.

Question 9

What is a cathode?

Answer 9

Negatively charged electrode.

Current flows out of electrode.

Question 10

What is an anion?

Answer 10

Carries negative electrical charge.

Question 11

What is a cation?

Answer 11

Carries positive electrical charge.

Question 12

What is a conductor?

Answer 12

Any material which allows the flow of energy or charged electrons through it.

Examples-water, copper, gold.

Question 13

OZONE

Made by:

Answer 13

High frequency - induction coil

Induction creates a spark, spark changes the attraction of ions