voltage
Voltage provides the push that can drive charge. This topic is part of Electricity within Science & Nature. This page currently draws on 23 supporting questions, with answers and bonus facts available below.
voltage trivia questions
Voltage is a measure of electric potential what?
Answer: Difference
Bonus fact: Voltage provides the push that can drive charge.
What is the SI unit of voltage?
Answer: Volt
Bonus fact: The volt is named after Alessandro Volta.
According to Ohm's law, voltage equals current multiplied by what?
Answer: Resistance
Bonus fact: V = IR.
What electrical property allows some quartz crystals to generate voltage when squeezed?
Answer: Piezoelectricity
Bonus fact: Quartz is widely used in oscillators because of its piezoelectric behavior.
Electric eels use low-voltage signals mainly for what besides communication?
Answer: Navigation and sensing
Bonus fact: Weak electric fields help detect objects and prey.
Ohm's law relates voltage, current, and what?
Answer: Resistance
Bonus fact: The basic relationship is V = IR.
If voltage stays constant and resistance doubles, current does what?
Answer: Halves
Bonus fact: I = V/R.
High-voltage transmission is used mainly because it reduces what loss?
Answer: Resistive energy loss
Bonus fact: For the same power, higher voltage allows lower current and lower I²R losses.
What device changes voltage levels throughout the power grid?
Answer: Transformer
Bonus fact: Transformers step voltage up for transmission and down for use.
Why is voltage stepped down near homes and businesses?
Answer: To provide safer usable distribution voltages
Bonus fact: High transmission voltages are reduced before local use.
What principle allows a generator to produce current when a conductor moves through a magnetic field?
Answer: Electromagnetic induction
Bonus fact: Changing magnetic flux induces voltage.
An electric eel can produce strong what?
Answer: Electric shocks
Bonus fact: Specialized electric organs generate voltage.