| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.SL.TZ0.16 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 16 | Adapted from | N/A |
Question
A cell of \({\text{emf }}\varepsilon \) and internal resistance \(r\) delivers current to a small electric motor.
450 C of charge flows through the motor and 9000 J of energy are converted in the motor. 1800 J are dissipated in the cell. The emf of the cell is
A. 4.0 V.
B. 16 V.
C. 20 V.
D. 24 V.
Markscheme
D
Examiners report
[N/A]
