Physics-Objective Related Question Answers
476. The electrical potential for a source in a circuit is called?
EMF
477. The emf of a voltaic cell?
1 volt
478. Emf of mercury cell?
1.35 volt
479. The emf of a dry cell?
1.5 volt
480. Voltage of a torch cell?
1.5 volt
481. Emf of Lithium ion battery?
3.6 volt
482. The rate of production of electrical energy per unit time?
Electric power
483. Electricity supplied for domestic use is?
Alternating Current (AC)
484. Electricity for. domestic purpose. is measured In?
Kilowatt hour (Kwh)
485. Kilowatt hour is commonly called as?
Units [1 KWh :0:. 1000 watt x 3600 seconds]
486. The commercial unit of electrical energy is also?
KWh
487. The technique used in the electric circuits in house hold purpose to protect appliances?
Short Circuiting
488. Instrument used to measure the amount of electric energy used by a consumer?
Watt hour meter
489. Electric power transmission was developed by?
Thomas Alva Edison
490. The supply voltage produced in India?
11KV (Kilovolt) or 11000 volt
491. Voltage range for household purpose?
220-230 volt
492. Q The frequency of household electric current in India is?
50 Hertz
493. The study of nature, control and application of electrons?
Electronics
494. Vacuum tubes work on the principle of?
Thermionic emission
495. The simplest form of a vacuum tube?
Diode
496. The device used to convert alternating current (AC) to Direct Current (DC)?
Rectifiers
497. The device which converts DC energy into AC energy?
Electronic oscillator
498. The process which makes the current to pass in the same direction is called?
Rectification
499. Now thermionic valves are completely replaced by'?
Transistors
500. Miracle child of electronics?
Transistor
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