Current, potential difference and resistance

Question 1

What is current?

Answer 1

The rate of flow of charge

Question 2

What is charge measured in?

Answer 2

Coulombs, C

Question 3

Parts in a circuit are called?

Answer 3

Components

Question 4

How much is a coulomb?

Answer 4

A very large number of electrons

Question 5

What is the units for potential difference?

Answer 5

Volts, V

Question 6

What is resistance?

Answer 6

Anything that slows down the flow of charge

Question 7

What is resistance measured in?

Answer 7

Ohms (Ω)

Question 8

What does a battery consist of?

Answer 8

Cells

Question 9

A parallel circuit current splits depending on what?

Answer 9

Its Resistance

Question 10

What does the symbol Q represent?

Answer 10

Charge

Question 11

Which type of circuit can current flow around?

Answer 11

A closed circuit

Question 12

What does the symbol I stand for in an equation

Answer 12

Current

Question 13

What does the symbol T stand for?

Answer 13

Time

Question 14

What happens to resistance in filament light bulb?

Answer 14

As the current increases, the resistance decreases.

Question 15

What is potential difference?

Answer 15

The driving force that pushes the charge around a circuit

Question 16

What is electromotive force?

Answer 16

The energy provided by a cell or battery

Question 17

What is the unit for potential difference (v)?

Answer 17

Voltage (V)

Question 18

What is the unit for current?

Answer 18

Amps

Question 19

What is current measured in?

Answer 19

Amps (amperes)

Question 20

What is the resistance units?

Answer 20

Ohms (Ω)

Question 21

What does LDR stand for?

Answer 21

Light dependent resistor

Question 22

What does an LDR depend upon?

Answer 22

Light intensity

Question 23

Resistance in a single circuit?

Answer 23

V=IR

Question 24

The resistance of a thermistor depends upon?

Answer 24

Temperature