A 10 μF capacitor stores 4.5 mJ of energy. It then discharges through a 25 Ω resistor. What is the maximum current during the discharge of the capacitor? A 1.2 A B 18 A C 30 A D 36 A
A 10 μF capacitor stores 4.5 mJ of energy. It then discharges through a 25 Ω resistor. What is the maximum current during the discharge of the capacitor? A 1.2 A B 18 A C 30 A D 36 A
Start with an expression for stored energy, solve to give you a voltage. That is the max voltage at the start of the discharge, so sub that into ohm's law to get a corresponding max current.
Start with an expression for stored energy, solve to give you a voltage. That is the max voltage at the start of the discharge, so sub that into ohm's law to get a corresponding max current.
A 10 μF capacitor stores 4.5 mJ of energy. It then discharges through a 25 Ω resistor. What is the maximum current during the discharge of the capacitor? A 1.2 A B 18 A C 30 A D 36 A
How much teaching experience do you have, the art is in giving students what they need to make progress, not what they want. Oh, and just handing out answers is against the TSR rules.
Start with an expression for stored energy, solve to give you a voltage. That is the max voltage at the start of the discharge, so sub that into ohm's law to get a corresponding max current.
thank you so much for the solution , I got the answer but I wanted to double check why ohms law can be applied to capacitors because I thought there is no resistance in the capacitor ? or are we saying that the Vmax found for the capacitor is exactly the same value as for the resistor so we are actually applying ohms law to the resistor
thank you so much for the solution , I got the answer but I wanted to double check why ohms law can be applied to capacitors because I thought there is no resistance in the capacitor ? or are we saying that the Vmax found for the capacitor is exactly the same value as for the resistor so we are actually applying ohms law to the resistor
Note that there is a resistor connected in series with the capacitor.