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4.2 Electrical quantities

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Question 64

Two separate circuits have power supplies X X\,X and YYY. Both power supplies deliver the same power (energy per unit time).

Power supply X X\,X provides a current of 1.5 A and power supply Y Y\,Y provides a current of 0.5 A.

Which statements about Y Y\,Y are correct when compared with XXX?

  1. Y Y\,Y supplies one-third the charge per unit time.
  2. Y Y\,Y supplies three times the energy per unit charge.
  3. Y Y\,Y supplies three times the energy per unit time.
A

1, 2, and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

Markscheme

4.2 Electrical quantities Questions

  1. IGCSE
  2. /Physics
  3. /4.2 Electrical quantities

452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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