A22.5 μf spherical capacitor is composed of two metallic spheres, one having a radius twice as large as the other. if the region between the spheres is a vacuum, determine the volume of this region. m^3

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?

Which of the following statements correctly describes a transformer?

If the pressure in a gas is doubled while its volume is held constant. true or false