Physics Current Electricity DUHS 2023
PMDC Verified Question 45 of 112
The electric potential sets across the terminals of a battery is called:
A
Potential difference
B
EMF
C
Internal potential drop
D
Terminal voltage
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Terminal voltage
Concept:

While EMF represents the battery's theoretical maximum capability, the actual measurable voltage across its output nodes under operation gets a distinct name.

Solution:

  • The specific voltage physically measurable across the outside connecting points (terminals) of a functioning cell is explicitly called the Terminal voltage (\(V_t\)).


Why other options are incorrect:

  • Opt A: This is a general physics term, not specific to battery nodes.


  • Opt B: EMF is the voltage when the circuit is entirely open (no current).


  • Opt C: This is the voltage lost inside the battery (\(Ir\)), not what is available at the terminals.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Current Electricity MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App