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Electric Power

Unit of elect...

Question

Unit of electric power may also be expressed in

(A) volt ampere
(B) kilowatt hour
(C) watt second
(D) joule second

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Solution

Power= voltage*current
Unit: volt ampere

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Q. Question 18
Unit of electric power may also be expressed as

(a) volt ampere
(b) kilowatt hour
(c) watt second
(d) joule second

Q. Match the following combinations of electrical units with their terms as single unit:

Electrical unit	Single unit
(I) ampere-second	A. coulomb
(II) volt-ampere	B. ohm
(III) volt-ampere $^{- 1}$	C. ampere
(IV) walt/ampere ohm	D. watt
(V) joule / ampere second	E. volt

Q. The unit for expressing electric power is:

(a) volt
(b) joule
(c) coulomb
(d) watt

Match the following:

Column A Column B

(a) Electric power (i) volt

(b) kWh (ii) joule

(c) Electric current (iii) $v o l t \times a m p e r e$

(d) Electric energy (iv) watt

(e) watt (v) ampere

(f) Potential difference (vi) electric energy

The commercial unit of energy is :

(a) watt

(b) watt-hour

(c) kilowatt-hour

(d) kilo-joule

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