Question

A bulb is rated 5.0v ,100mA . calculate the power and resistance.

Ik the answer but can anyone just explain me how that 10 to the power -3 came? ​

Answer 1

Answer:

your answers are correct.

Explanation:

It is because when milliampere is converted to ampere (10)^-3 is used.

Answer 2

here, value of current is given as 100 mA which means it is 100 milli ampere . We know that 1 A =1000 mA

so, 1 mA =1/1000A

, 1 mA =10-³ A

, 100 mA = 100 ×10-³ A

hope it helps

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#army