flashcards practice #4

Question 1

Advantages of Parallel circuit

Answer 1

-They can turn on and off separately
-If one of the bulbs stops working that does not effect the other component.

Question 2

What is Voltage?

Answer 2

related to energy

Question 3

What is Volts?

Answer 3

The measure of Voltage

Question 4

How much Voltage do most cells supply?

Answer 4

1.5 V

Question 5

What is a battery?

Answer 5

one or more cells connected in a series.

Question 6

What are main Voltages in batteries?

Answer 6

6V, 9V or 12 V

Question 7

What are mains?

Answer 7

electrical supply that comes from the power stations.

Question 8

How much are mains mostly?

Answer 8

220 to 240 V

Question 9

What is a supply?

Answer 9

Source of energy

Question 10

The lamps used in schools are of how much V?

Answer 10

3V to 6 V

Question 11

What thing measures Voltage?

Answer 11

Voltmeter

Question 12

The energy in the cell and in each component should?

Answer 12

stay the same

Question 13

In a series circuit what happens to the Voltage?

Answer 13

It is shared.

Question 14

If there are more components then?

Answer 14

The current will decrease

Question 15

Adding more cells does what?

Answer 15

increases the Voltage
Increase the current

Question 16

The more components in a parallel makes V increase or decrease?

Answer 16

increase

Question 17

What is resistance ?

Answer 17

How easy or difficult it is for electrons to move through a material

Question 18

Conductors have - resistance?

Answer 18

low resistance

Question 19

Insulators have __ resistance?

Answer 19

high resistance

Question 20

How is resistance measured?

Answer 20

In Ohms

Question 21

Why do Copper wires have a low resistance?

Answer 21

So that they don’t affect the current that much.

Question 22

Filament meaning:

Answer 22

high resistance wires

Question 23

Who invented Ohms law?

Answer 23

Georg Simon Ohm

Question 24

What is Ohms’ law?

Answer 24

voltage= current x resistance

Question 25

Why is it I not C for Current?

Answer 25

Because the scientist was French and called it l’intensite` du courant

Question 26

What is a resistor?

Answer 26

A component which is supposed to have a fixed resistance.

Question 27

Why are there colored bands on resistors?

Answer 27

it acts like a code to show how much resistance it has

Question 28

Why are there colored bands on resistors?

Answer 28

it acts like a code to show how much resistance it has