lock in ‘meter’ capable of being charged to 2.4 x 106 Volt potential before sparking into the air, given that dielectric strength of air is 24,000 V/cm.   (ii) Find the heat energy(flow) in ‘Joules’ required to prepare a coffee in an electric kettle with 0.5 litre (1litre = 10-3 m3 ) of water which is heated from 30ºC to 85ºC?

A rod and two balloons A very thin glass rod 4 meters long is rubbed all over with silk cloth. It gains a uniformly distributed charge 1.2 x 10-6 C. Two small spherical rubber balloons of radius 1.2 cm are rubbed all over with wool. They each gain a uniformly distributed charge of -4 x 10-8 C. The balloons are near the midpoint of the glass rod, with their centers 3 cm from the rod. The balloons are 2 cm apart (4.4 cm between centers). Length 4 m (drawing not to scale) 2 cm 3 cm Radius 1.2 cm 0,6 cm (a) Find the net electric field at the location marked by the x, 0.6 cm to the right of the center of the left balloon. Things to think about: Which objects make nonzero contributions to E at this location? What are the correct distances from sources to the observation location? What is the direction ofE due to the rod? (The drawing is not to scale; read the problem statement carefully. Assume the +x axis is to the right, the +y axis is up, and the +z axis is out.) N/C What approximations…

Find the current, voltage, and power associated with the 20- . ΚΩ resistor 5 mA 10 k2 0.01V 5 kQ 20 k2

4. Compare and contrast electric domain walls to magnetic Bloch walls. Consider such items as wall thickness, direction of polarization or magnetization, and factors that influence on each.