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Science > Grade 9; Electricity > Flashcards

Grade 9; Electricity Flashcards

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1
Q

Series; what is the ME for Vt

A

Vt=v1+v2+v3

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2
Q

Series; what is the ME for Rt

A

Rt=r1+r2+r3

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3
Q

Series; What is the ME for It

A

it= i1=i2=i3

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4
Q

Parallel; what is the ME for Vt

A

Vt=v1=v2=v3

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5
Q

Parallel; What is the ME for It

A

It=I1+I2+I3

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6
Q

Parallel; What is the ME for Rt

A

Rt= 1/R1+1/R2+1/R3

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7
Q

What is Ohm’s Law

A

R-v/i

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8
Q

what is the power law

A

P=VxI

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9
Q

How do you find Cost?

A

power(in KW) + Time + Cost

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10
Q

Electrical Energy is measured in ?

A

joules

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11
Q

Which controls the flow of current

A

a switch

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12
Q

define charging by fricition?

A

rubbing or touching together two NEUTRAL object

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13
Q

define charging by contacts/conduction

A

touching two objects together when one has a charge

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14
Q

define charging by induction

A

no contact is made between two objects

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15
Q

what is electricity

A

a charge either positive or negative that exterts and electrical force

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16
Q

where are protons and neutrons found?

A

nucleus

17
Q

where is the electron located

A

orbiting

18
Q

What does the Law of Electrical Charges state?

A
  • Like charges repel
  • Opposites attract
  • neutral objects attract BOTH because of induced charge separation
19
Q

What are the parts of a circuit

A

a voltage source, load, switch, conduction paths

20
Q

How do you calculate Electrical Efficiency

A

Energy out/Energy in x100

21
Q

What’s Static Electricity

A

an imbalance of electric charge on the surface of an object

22
Q

What is current electricly

A

the controlled flow of electrons through a conductor

23
Q

What is a conductor

A

a material that lets electrons move easily through it

24
Q

What is an Insulator

A

a material that does not easily allow the movement of electrons throughtout it

Science (3 decks)

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