Question

An electric field →E=(→i20+→j30) NC-1 exists in space. If the potential at the origin is taken to be zero, find the potential at (2 m, 2 m).

Answer 1

Answer:

Math, 18.08.2019 14:00, vishal7056

Divide a sum of rupees 13500 into 2 part such that if one part be learnt at 25 by 3% per annum for 2 years 9 month and the other at 15 by 2% per annum for 18 months the total interest received is rupees 2375

Answer 2

The potential at ( 2 m, 2 m) is 100 volts.

Explanation:

Given values in the question  :

Electric field :

• Electrical field is the electric force per unit charge.
• The field direction is taken as the force it would exert on a positive test charge.
• The electric current is radially towards the outside from a positive charge to a negative point charge radially.

                            $E=(20 i+30 j) N / C$

We must locate the potential at (2 m, 2 m).

So,                         $d=(2 i+2 j) m$

The relationship between the electric field and the electric potential is established through :

                              v = E.d

                              v = (20 i+30 j) .(2 i+2 j)  

                              v = (40 +60 )  

                               v = 100 volts

Thus, the potential is, v = 100 volts.