1. What are the charge carriers in a metal, but in an insulator and in blood? (t
ID: 1882127 • Letter: 1
Question
1. What are the charge carriers in a metal, but in an insulator and in blood? (total: 3 points)Metal (1 point)
Insulator (1 point)
Blood (1 point)
2. A current from an AAA battery passes through a lightbulb (the specifications for the lightbulb are 1Volt, 1Watt). Consequently, the bulb glows. How many electrons are destroyed in this process (how many electrons are consumed by the lightbulb)? (1 point) 1. What are the charge carriers in a metal, but in an insulator and in blood? (total: 3 points)
Metal (1 point)
Insulator (1 point)
Blood (1 point)
2. A current from an AAA battery passes through a lightbulb (the specifications for the lightbulb are 1Volt, 1Watt). Consequently, the bulb glows. How many electrons are destroyed in this process (how many electrons are consumed by the lightbulb)? (1 point) 1. What are the charge carriers in a metal, but in an insulator and in blood? (total: 3 points)
Metal (1 point)
Insulator (1 point)
Blood (1 point)
2. A current from an AAA battery passes through a lightbulb (the specifications for the lightbulb are 1Volt, 1Watt). Consequently, the bulb glows. How many electrons are destroyed in this process (how many electrons are consumed by the lightbulb)? (1 point)
Explanation / Answer
1.In metals the charge carriers are electrons,which are of negative charge.
Insulator does not have such free charges and cannot carry current.
Blood is an example of ionic solution which means it has both negative and positive ions as charge carriers.
2.we know P=VI
where P=power,I=current,V=voltage
I=P/V=1 watt/1volt=1 Ampere
1 Ampere represents a flow of 1 coulomb of charge per second.
Q=1C
number of electrons=total charge/charge on 1 electron=1C/1.6*10^-19=6.25*10^18 electrons
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