Current Electricity

Question 0

How does an insulator become charged?

Answer 0

Electrons are rubbed of one material and deposited on the other the insulator becomes positively or negatively charged

Question 1

What materials rub to gather to become charged

Answer 1

Insulating

Question 2

Like charges

Answer 2

Repel

Question 3

Unlike charges

Answer 3

Attract

Question 4

Current is measured by

Answer 4

An ammeter

Question 5

Potential difference measured with

Answer 5

Voltmeter

Question 6

Ohm’s law

Answer 6

Current through a resistor at constant temp is directly proportional to the potential difference across the resistor

Question 7

Ammeters are always connected in

Answer 7

Series

Question 8

Voltmeters are always connected in

Answer 8

Parallel

Question 9

Unit of resistance

Answer 9

Ohms

Question 10

What happens to the resistance of an LDR if it’s surroundings become darker?

Answer 10

Increases

Question 11

What effect does reversing the pd (potential difference) across a filament bulb have on the current-potential difference curve?

Answer 11

It makes no difference

Question 12

Where are the components connected in a series circuit

Answer 12

One after the other

Question 13

What happens in a series circuit if one component stops working

Answer 13

The charge stops flowing

Question 14

Ina series circuit the company’s have the same

Answer 14

Current in each

Question 15

Total resistance in a series circuite =

Answer 15

Adding the resistances = total resistance

Question 16

How could you find the total potential difference in a series circuit

Answer 16

Add up all potential differences

Question 17

In a parallel circuit each component is connected

Answer 17

Across the supply

Question 18

What happens in a parallel circuit if one component stops working

Answer 18

Charge still flows in the other parts as it’s connected across the supply