Circuits And Resistance (dr Spear)

Question 1

Potential difference (1)

Answer 1

The measure of how much energy is being transferred between two points in a circuit. Measured in Volts (V)

Formula: I * R

Question 2

Charge

Answer 2

Charge is a property of a particle

Question 3

Current

Answer 3

The amount of charge flowing per second. Measured in amps (A)

Formula: I (A) = V/R

Question 4

Resistance

Answer 4

Opposition to the flow of current . Measured in ohms

Formula: R = V/I

Question 5

Potential difference

Answer 5

The cell or battery provides the push to push the charges in between two points of a circuit. The push is the potential difference.

Question 6

Battery

Answer 6

A device that stores chemical energy and converts it to electrical energy

Question 7

Electron

Answer 7

A smaller particle of an atom

Question 8

Fixed Resistor

Answer 8

A fixed resistor has a fixed, defined resistance and allows fixed current through the components

Question 9

Variable resistor

Answer 9

A resistor in which the resistance chan be adjusted and the amount of current can be changed

Question 10

Electron

Answer 10

Electron is one of 3 smaller particles that make up an atom

Question 11

Positive charge

Answer 11

Positive charge is a charge that exists in a body that has fewer electrons than protons

Question 12

Negative charge

Answer 12

When an object has more electrons than protons is called a negative charge.