| Question |
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| Answer |
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| Give a worded explanation of current. |
Rate of flow of charge past a point in the circuit. |
| In what type of circuit is the current the same throughout? |
Series |
| Define electrical energy. |
Electrical Energy = Charge x Voltage (W = QV) |
| What is emf of a power supply a measure of? |
Total energy that it supplied to each coulomb of charge |
| A power supply has an emf of 0.001V. When Ekrem's X-Box is connected to this a current of 5A is measured using an ammeter. Calculate the resistance of the circuit. |
0.0002 Ohms (By the word Ohms i mean the symbol) |
| Enter Yianni and Erol. Erol says 'Yo Ktori, you know that due to the incompetance of X-box,the free ammeters that they supply with the x-boxes give off a faulty reading.' Erol is correct and the actual current in the circuit is 5x10^-3A. Calculate resista |
0.2 Ohms |
| Define Power |
Power = energy transferred/Time taken |
| How do you work out efficiency? |
Energy usefully transferred/Total energy transferred |
| When current is proportional to voltage what law is obeyed? |
Ohms law |
MedTemCP5 Word+Pics
