Current-ly dead inside

Question 1

Define electric current [A]

Answer 1

The 𝓻𝓪𝓽𝓮 𝓸𝓯 𝓯𝓵𝓸𝔀 of 𝔢𝔩𝔢𝔠𝔱𝔯𝔦𝔠 𝔠𝔥𝔞𝔯𝔤𝔢

Question 2

Electric current [A] formula

Answer 2

I [A] = Q [C] / t [s]

Question 3

Define e.m.f. [V] or [J/C]

Answer 3

The 𝕨𝕠𝕣𝕜 𝕕𝕠𝕟𝕖 from an electrical source to move a͟ ͟u͟n͟i͟t͟ ͟c͟h͟a͟r͟g͟e͟through a circuit

Question 4

e.m.f [V] or [J/C] formula

Answer 4

ℰ [V] or [J/C] = Work [J] / Q [C]

Question 5

What is ᴇʟᴇᴄᴛʀᴏɴ ᴄᴜʀʀᴇɴᴛ

Answer 5

The flow of negative charges (electrons) from the Negative to POSITIVE terminal

Question 6

What is 𝙘𝙤𝙣𝙫𝙚𝙘𝙩𝙞𝙤𝙣𝙖𝙡 𝙘𝙪𝙧𝙧𝙚𝙣𝙩 (of electricity)

Answer 6

The flow of positive charges from the POSITIVE to Negative terminal

Question 7

Define 𝘗𝘰𝘵𝘦𝘯𝘵𝘪𝘢𝘭 𝘋𝘪𝘧𝘧 [V]

Answer 7

The 𝕨𝕠𝕣𝕜 𝕕𝕠𝕟𝕖 from an electrical source to move a͟ ͟u͟n͟i͟t͟ ͟c͟h͟a͟r͟g͟e͟ 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 𝘵𝘸𝘰 𝘱𝘰𝘪𝘯𝘵𝘴

Question 8

𝘗𝘰𝘵𝘦𝘯𝘵𝘪𝘢𝘭 𝘋𝘪𝘧𝘧 formula

Answer 8

p.d. [V] = Work [J] / Q [C]

Question 9

What does Ammeter do

Answer 9

Placed in SERIES to obtain the current of a circuit component

Question 10

What does Voltmeter do

Answer 10

Placed in Parallel to obtain the 𝘗𝘰𝘵𝘦𝘯𝘵𝘪𝘢𝘭 𝘋𝘪𝘧𝘧 of a circuit component

Question 11

𝗥𝗲𝘀𝗶𝘀𝘁𝗮𝗻𝗰𝗲 [Ω] formula

Answer 11

R [Ω] = p.d. [V] / I [A]

Question 12

Define 𝗥𝗲𝘀𝗶𝘀𝘁𝗮𝗻𝗰𝗲 [Ω]

Answer 12

The difficulty for current to pass through a material

Question 13

Ohm’s LanJiao Law (basically Resistance, same fuckin formula)

Answer 13

The current [A] is ᴅɪʀᴇᴄᴛʟʏ ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟ to the p.d.[V] in a conductor (s͟t͟r͟a͟i͟g͟h͟t͟ ͟l͟i͟n͟e͟ I/V graph)

Question 14

Factors of resistivity

Answer 14

• Length (multiply Ω)
• Cross-Sectional ＡＲＥＡ (divide Ω)
• temperature (↑ temp, ↑ Ω)
• material (good conductor, bad Ω)

Question 15

Explanation of Curved I/V graph [don’t follow Ohm’s law]

Answer 15

The resistance increases as heat increases (↓ in gradient, ↑ in current)

Question 16

Explanation of s͟t͟r͟a͟i͟g͟h͟t͟ I/V graph [follows Ohm’s law]

Answer 16

The resistance Ω is ᴅɪʀᴇᴄᴛʟʏ ᴘʀᴏᴘᴏʀᴛɪᴏɴᴀʟ to V/I (constant gradient)