1. Two metal plates are separated as far as 1 m is given charge of the same. Calculate how the magnitude of the magma-Maming if the style that arises is 810 N! 2. To move a charge of Q from one place to another different potential 15 volts required effort by 60 Joules. Count the large effort required to move a charge of 4Q from one place to another if a potential of 20 volts!

3. Two wire connection telecommunication known to have the type of material and the length of the same wire, but has cross-sectional area is different. The cross-sectional area of the connection wire of the second a half times the area of the connection wire first. If the connection is first wire has a resistance of 5Ω. What is the magnitude of the obstacles on the connection of the second wire?