What is current?
Rate of flow of electrical charges which is electrons.
Current is due to…
It is the flow of electrons.
What is the SI unit for current?
What is the SI unit for work done?
Ampere
Voltage
What is the SI unit symbol for current?
What is the SI symbol for work done?
(A)
(V)
What is voltage?
voltage is the _______ _______ across an electrical component where it represents the _______ _____ to move a _______ charge across two points.
potential difference, work done, unit
What is voltage?
Voltage is the potential difference across an ________ ________, where it represents the work done to ______ a unit _______ across two points
electric component, move, charge
What is voltage
The potential difference across an electric component where it represents the work done to move a unit charge across two points.
Resistance of a component is the _____ of how much the component ______ the flow of ____________ __________
measure, opposes, electric charge.
What is an ammeter?
A ammeter is used to measure the current across an electrical component.
What is a voltmeter?
A voltage is used to measure the potential difference across 2 points.
What is the difference between a voltmeter and ammeter?
A _______ can be connected in ______ but not in series while an _______ can be connected in ____ but not in parallel.
A ______ is used to measure the potential difference across __________ while the _______ is used to measure the current across an electrical component.
voltmeter, parallel, ammeter, series
voltmeter, 2 points, ammeter
What is the direction of conventional flow to current?
Positive to negative.
Where do electrons flow from in the circuit?
Electrons flow from the negative terminal to the positive terminal as they oppose the direction of conventional flow.
What happens when I add more batteries into a circuit with a light bulb connected?
The voltage across the electrical circuit is now increased which makes the potential difference also increased. The work done to move a unit charge now also increased and thus the current increases and so more current passes through the bulb and now it becomes brighter.
What is the direction of conventional flow to current?
Positive to negative.
