Electricity and magnetism Flashcards by Sara Slaatsveen | Brainscape

Q

Electric field intensity =

A

frequency ÷ electric charge

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Q

Ohms law:

Resistance (ohms) =

A

voltage (volts) ÷ current (amperes)

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Q

Current =

A

charge (coulombs) ÷ time (s)

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Q

Voltage=

A

energy (J) ÷ charge (coulombs)

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Q

Electromotive force =

A

lost volts + terminal potential difference

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Q

Circuit :
In series –>

In parallel–>

A

current stays the same, voltage divides

voltage stays the same, current divides

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Q

Resistance (in series) =

A

R1 + R2 + R3

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Q

Resistance (in parallel) =

A

1/R = 1/R1 + 1/R2 + 1/R3

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Q

Power =

A

energy ÷ time

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Q

Potential divider =

A

V1/V2 = R1/R2

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Q

V1 =

V2=

A

(R2 ÷ R1+R2) x V

(R1 ÷ R1+R2) x V

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