Practise MYP Physics questions on 3.3 Current, Voltage, Power and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
According to the textbook's description of how voltage affects charges, which statement is most accurate?
To measure the current flowing through a lamp, an ammeter must be connected in __________ with the lamp.
An ammeter must be placed in series with a component because it measures:
For a given quantity of charge , if the time interval taken for that charge to flow through a point is tripled, the resulting current will become __________ its original value.
According to the fundamental definition of resistance derived from Ohm's Law, resistance is the ratio of potential difference to __________.
Voltage increases the mass of charges so they fall through the circuit
Voltage transfers energy to each charge, enabling motion
Voltage creates a vacuum that pulls charges through the wire
Voltage applies a mechanical push to move charges physically
series
parallel
the opposite direction
combination
The energy difference between two points
The opposition to current provided by the power source
The potential energy of the electrons at a single point
The rate of charge flow through the same path as the component
three times
nine times
one-ninth
one-third
time
current
energy
charge
