Electric Circuits Answers

discuss energy levels of light nuclei & hypothesis of charge independence of nuclear force

If you use 20 J of work to push a 2-C charge into an electric field, its voltage with respect to its starting position is a) 10 V b) less than 10 V c) more than 10 V

an electric bulb draws a current of 0.2a,when the voltage is 220v.calculate the amount of charge flowing through it in 1 hour

If you use 17 J of work to push a charge into an electric field and then release the charge, as the charge flies past its starting position, its kinetic energy is

how many joules are there in 1kwh

name the scientists who discovered superconductivity

Two conducting spheres having charges 3Q and 5Q attract each other with a force of 10N. They are then touched with each other and then separated to the same distance again. Calculate the magnitude and nature of force now.

(a) At what wavelength does Venus' surface emit the most radiation?
(b) Do astronomers have telescopes that can detect this radiation?
(c) Why can't we use such telescopes to view the surface?
(d) Suppose that Venus didn't have an atmosphere, but still retained the same albedo (i.e. it reflected ~ 70% of the incoming solar radiation), what would be the average surface temperature of Venus

an electric iron consumes energy at a rate of 750 W when heating is at the maximum. the voltage is 220V. find the current and resistance.