Question

A bulb is rated 5.0 v, 100ma. Calculate its rated power and resistance.

Answer 1

Answer:

CURRENT ELECTRICITY

Explanation:

GIVEN ;

» Potential = 5 Volt

» Current = 100mA = 0.1 A

Now ;

★1 } Resistance ★

$v \: = i \: \times r$

«★» R = V / I = 5 / 0.1 = 50 Ω ( ohms ).

★2 } Power ★

$power \: = v \: \times i = \frac{ {v}^{2} }{r} = {i}^{2} \times r$

«★» Power = ( 5 )² / 50 = 25 / 50 = 0.5 WATT .

HENCE ;

ANSWER :- Power is 0.5 Watt and Resistance is 50 Ohms.

Answer 2

Answer:

Answer:

first of all power is rate of doing work

as mentioned by you..

secondly,it's unit is J/sec also known as Watt

there are other multiple and sub multiple units

Explanation:

Explanation: