Voltage

Question 1

Potential difference will exist between two points in a circuit that have a?

Answer 1

Difference in charge

Question 2

What is potential difference measured in?

Answer 2

Volts (V)

Question 3

What is the name of the force that drives the current through a circuit?

Answer 3

Electromotive Force (EMF)

Question 4

Name 6 methods by which voltage can be produced.

Answer 4

Induction, Heat, Friction, Light, Chemical, Pressure.

Question 5

To produce a voltage chemically, the two metal plates need to be made of?

Answer 5

Dissimilar metals

Question 6

Examples of where voltage is produced by friction.

Answer 6

Sticking a balloon to a wall.

Question 7

What are all the requirements needed to produce a voltage by induction?

Answer 7

An electrical conductor, a magnetic field, relative movement.

Question 8

What determines the polarity of an induced voltage?

Answer 8

The direction of movement between magnetic field and conductor.

Question 9

What determines the amount of voltage produced by a thermocouple?

Answer 9

The difference in temperature, The two types of material used.

Question 10

What is the name given to the materials in a solar panel?

Answer 10

Semiconductors