How much current flows when 10 C passes down a wire in 2 s?

How much energy is transferred when 3 C of charge moves through a potential difference of 6 V?

Which equation correctly shows the relationship between energy transferred, voltage and charge?

What is the voltage of an appliance if it uses 200 J per second when supplied with a current of 5 A?

Power, potential difference and current are correctly related by which equation?