2 Electricity

Question 1

Current

𝘸𝘩𝘢𝘵 𝘪𝘴 𝘪𝘵, 𝘶𝘯𝘪𝘵, 𝘴𝘺𝘮𝘣𝘰𝘭

Answer 1

The rate of flow of charge / the amount of charge transferred per second.
Amperes - Amps A
A

Question 2

Resistance

𝘸𝘩𝘢𝘵 𝘪𝘴 𝘪𝘵, 𝘶𝘯𝘪𝘵, 𝘴𝘺𝘮𝘣𝘰𝘭

Answer 2

• A measure of how a component resists (opposes) the flow of electrical charge.
• Ohms Ω
• R

Question 3

The current in a single closed loop is the 𝘴𝘢𝘮𝘦 / 𝘥𝘪𝘧𝘧𝘦𝘳𝘦𝘯𝘵 at all points.

Answer 3

same

Question 4

The higher the resistance…

Answer 4

…the lower the current.

Question 5

Current can only flow if: (2)

Answer 5

• There is a complete circuit

* There is a p.d (which is - two names)

Question 6

Ammeter

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 6

• Measures current

Question 7

Thermistor

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 7

• As temperature increases, resistance decreases

Question 8

Voltmeter

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 8

• Measures voltage

Question 9

Variable resistor

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 9

• Resistance can be manually varied

Question 10

LDR

𝘯𝘢𝘮𝘦, 𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 10

• Light Dependent Resistor

* Resistance increases when the light intensity decreases

Question 11

Electric field

𝘥𝘦𝘧𝘪𝘯𝘪𝘵𝘪𝘰𝘯 / 𝘸𝘩𝘢𝘵 𝘥𝘰 𝘵𝘩𝘦𝘺 𝘭𝘰𝘰𝘬 𝘭𝘪𝘬𝘦?

Answer 11

Places where a charged particle experiences a force.

Question 12

Diode

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 12

Allows current to flow in one direction only.

Question 13

What is Ohm’s Law?

Answer 13

voltage = current * resistance

Question 14

Current 𝘥𝘰𝘦𝘴 / 𝘥𝘰𝘦𝘴𝘯’𝘵 get used up. It is the 𝘴𝘢𝘮𝘦 / 𝘥𝘪𝘧𝘧𝘦𝘳𝘦𝘯𝘵 anywhere in a closed loop.

Answer 14

Current doesn’t get used up. It is the same everywhere in a closed loop.

Question 15

Lamp

𝘴𝘺𝘮𝘣𝘰𝘭, 𝘱𝘳𝘰𝘱𝘦𝘳𝘵𝘪𝘦𝘴/𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯

Answer 15

Converts electrical energy into light energy.