Two equipotential surfaces that surround a +3.0 x 10^-7 C point charge has a radius of 0.15m, what is the potential surface(adsbygoogle = window.adsbygoogle || []).push({});

Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k= 4.50). The empty capacitor is connected to a 12.0 V battery. What must be the potential difference across the plates of the capacitor filled with a dielectric such that it stores the same amount of electrical energy as the empty capacitor?

A resistor is connected across the terminals of a 9.0-V battery which delivers 1.1x10^5 J of energy to the resistor in six hours what is the resistance to the resister? (i solved this one but got a ridiculously small resistance of like 3.4 to the negative 8)

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# Homework Help: Need help very badly please.

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