Class 7 Science MCQs - Chapter 6
Electrical Circuits and Electric Currents Multiple Choice Questions (MCQs) PDF Download - 53
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The Electrical circuits and electric currents Multiple Choice Questions (MCQs) with Answers PDF (electrical circuits and electric currents MCQs PDF e-Book) download Ch. 6-53 to study Grade 7 Science Course. Learn Electrical Circuits and Electric Currents Quiz Questions and Answers to study online school courses. The Electrical Circuits and Electric Currents MCQs App Download: Free learning app for uses of electromagnets, earth wires, fuses and circuit breakers, current and energy test prep for online education programs.
The MCQ: The loudspeaker changes the electric signals into; "Electrical Circuits and Electric Currents" App Download (Free) with answers: Heat and sound waves; Light waves and heat; Sound waves; Heat energy; to study online school courses. Solve Uses of Electromagnets MCQ Questions, download Google eBook (Free Sample) for elementary school graduation certificate.
Electrical Circuits and Electric Currents MCQs with Answers PDF Download: Quiz 53
The loudspeaker changes the electric signals into
- light waves and heat
- heat and sound waves
- sound waves
- heat energy
Earth wire is a wire that
- is used to earth excess current
- insulates excess current
- diffuses excess current
- recharges voltage
The wire coil is wound round the neck of a
- paper cone
- magnet
- bass tube
- mechanical magnet
One of the causes of overloading is
- long circuit
- short circuit
- overloaded cables
- heavy circuit
Sometimes, bulb does not light up even if the circuit is complete because the
- energy is low
- power is low
- resistance is high
- electric charges are insufficient
Class 7 Science Mock Tests
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