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4.2.5 Electrical energy and electrical power

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Question 20

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

4.2.5 Electrical energy and electrical power Questions

  1. IGCSE
  2. /Physics
  3. /4.2.5 Electrical energy and electrical power

69 exam-style questions on CIE IGCSE Physics 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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