Foundation November 2018 Paper 2 Q13
13. The table shows some facts about electricity.
| Fact | Formula |
|---|---|
| Power = Voltage x Current | \(P = VI\) |
| Voltage = Current x Resistance | \(V = IR\) |
| Charge = Current x Time | \(Q = It\) |
| Energy = Voltage x Charge | \(E = VQ\) |
(a) Calculate \(V\) when \(I\) = 2·5 and \(R\) = 0·7. [1]
(b) Calculate \(E\) when the Voltage is 240 and the Charge is 12. [1]
(c) Calculate the Time when the Charge is 75 and the Current is 12·5. [2]
| Scheme | Marks | Comments |
|---|---|---|
| 1.75 | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| 2880 | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| (\(t\) =) 6 | B2 | Award B1 for sight of 75 ÷ 12.5 or 75 = 12.5 x \(t\) |
| (4) |