Calculate the electric field strength if the potential across charged plates is 12 volts and their separation is 0.6 cm.

2000V/m

Explanation:

Electric field strength(E) across a charged plate is the ratio of the potential difference(V) across the plate and the distance (d) between the plates.

Mathematically, E = V/d where;

V is the potential difference = 12volts

d is the distance between the plates = 0.6cm = 0.006m

E = 12/0.006

E = 2000V/m

The electric field strength is therefore 2000V/m

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27