00:02
So what happens here is actually potential difference accelerating the charge particle is given as v is equal to 5 kilo volt or we can say it as 5 ,000 volts.
00:13
Okay, now as it is singly ionized carbon ion, so q will be how much one electron is having the charge of 1 .6 multiplied by 10 to the power minus 90.
00:25
Okay, cool up.
00:27
This is the charge.
00:28
Okay, now our radius is given as 21.
00:32
Centimeter or we can write it as 0 .21 meter.
00:36
So this is the data which is given.
00:38
So using equation so r is equal to under root 2 product m into charge and voltage divided by b into q.
00:51
We need to calculate b that is magnetic field.
00:53
B we do not know we need to calculate b.
00:56
So how will calculate so b will be is equal to let us calculate r then we'll calculate b.
01:02
Okay so so r is already given in the question.
01:04
What is the r? r is 0 .21.
01:07
Just now we calculated.
01:08
We put the value of r here...