Question

A physicist performing a sensitive measurement wants to limit the magnetic force on a moving charge in her equipment to less than 1.00 x 10 -12 N. What is the greatest the charge can be if it moves at a maximum speed of 30.0 m/s in the Earth’s field? You may assume the Earth’s magnetic field is 5.00 x 10 -5 T.

Answer 1

Maximum charge will be
`6.66* 10^(-9)C`

Step-by-step explanation:

We have given force ion the moving charge
`F=10^(-12)N`

Maximum speed of the moving charge v = 30 m /sec

Magnetic field
`B=5* 10^(-5)T`

We have to fond the charge

Force on moving charge is given by

`F=qvB`

So
`10^(-12)=q* 30* 5* 10^(-5)`

`q=6.66* 10^(-9)C`

Maximum charge will be
`6.66* 10^(-9)C`