circuits

Question 1

what’s an electric current

Answer 1

flow of electrical charge (electrons)

Question 2

state the unit for electric current

Answer 2

Amps A

Question 3

state the unit for charge

Answer 3

Coulombs C

Question 4

the devise used to measure current

Answer 4

Ammeter

Question 5

the devise used to measure potential difference

Answer 5

Voltmeter

Question 6

state the unit for potential difference

Answer 6

Volts (V)

Question 7

what is voltage

Answer 7

electrical push/driving force that pushes the charge around the circuit

Question 8

rule for current flowing in a series circuit

Answer 8

current is the same in all areas of the circuit

Question 9

the rule for current flowing in a parrallel circuit

Answer 9

current is shared between different routes

Question 10

the rule for voltage measured across components in a series circuit

Answer 10

voltage is shared between components

Question 11

state the rule for voltage measured across components in a parallel circuit

Answer 11

voltage is the same across components in a parallel circuit

Question 12

state the formula to calculate charge

Answer 12

charge = current x time (Q= I x t)

Question 13

state the formula to calculate energy transferred

Answer 13

energy = charge x potential difference (E= Q x V)

Question 14

state ohms law

Answer 14

voltage = current x resistance (V= IR )

Question 15

what is resistance

Answer 15

anything that slows the flow of electric charge

Question 16

what happens to the resistance in a wire if the temperature increases

Answer 16

resistance also increases

Question 17

how is a voltmeter plsces into a circuit

Answer 17

in parallel to the component being tested