Curriculum
Course: IB Physics SL
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Curriculum

IB Physics SL

Theme A — Space, Time and Motion

0/80 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/87 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/60 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/41 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/59 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/54 Dr Dabour Hub Science Diagram and Course Material
Quiz

B.5.11 Electromotive Force and Internal Resistance – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The e.m.f. of a cell is best defined as
force on an electron
current times resistance
the p.d. across the load
energy converted to electrical per unit charge in the cell
2.
A 9.0 V battery with r = 1.0 Ω supplies 2.0 A. The terminal p.d. is
7.0 V
9.0 V
2.0 V
11 V
3.
On a graph of terminal p.d. (y) against current (x), the internal resistance is
the y-intercept
the x-intercept
the magnitude of the gradient
the area under the line
4.
A cell of e.m.f. 3.0 V and internal resistance 0.50 Ω is short-circuited. The current is
1.5 A
6.0 A
3.0 A
infinite
5.
A battery of e.m.f. 6.0 V and r = 2.0 Ω is connected to a 10 Ω resistor. The current is
0.60 A
0.50 A
3.0 A
0.75 A
6.
For the circuit in the last question, the efficiency of the source is
83%
17%
50%
100%
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Part of Theme B — The Particulate Nature of Matter — see every lesson and quiz in this unit.
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