00:01
In the question it is given that voltage is equal to 1 .50 volt.
00:06
The power of the device is 0 .343 watt and the time taken is 20 .2 minute.
00:15
So when we convert it into second it has to be multiplied by 60.
00:20
So it comes out to be 1212 seconds.
00:25
Now in the a part of the question we have to find the electric charge.
00:30
And in the b part we have to find the number of electrons that is n.
00:35
So to solve a part we know that the electric charge q is defined as the product of current that is i and the time that is t.
00:49
So it is the product of current and time.
00:52
So we get the current by the expression power is defined as the product as the product.
01:00
Of voltage and current.
01:02
Hence current i is equal to power divided by the voltage.
01:08
So when we put the given values from the data, we get current i equal to 0 .343 divided by 1 .5.
01:20
So i equal to 0 .2 2 ampere...