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RRB ALP Previous Paper 15 (Held On: 21 Aug 2018 Shift 1)

Option 1 : Watt

RRB ALP 2018 Full Test (Stage II - Part A)

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100 Questions
100 Marks
90 Mins

**Watt is a unit of power.**

__CONCEPT__:

- Power: The rate of work done by the electric energy is called power. It is denoted by P.

i.e.,\(P=\frac{Work}{time}\)

The SI unit of power is the watt (W).

Watt is a small unit that's why kilowatt-hour is used as the unit for electrical energy.

Explanation:

From the above explanation, we can see that,

- One watt is defined as the energy consumption rate of one joule per second.
- 1W = 1J / 1s.
- One watt is also defined as the current flow of one ampere with a voltage of one volt.
- It is completely different from "Units" which measures the electricity provided to our houses.1 Unit is 1000 watt-hour.