Chapter 1 - Activity sheet 3

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Chapter 1: Principles of electrical science
Activity sheet 1.3: Transposition 1
Aims and objectives
At the end of this activity, you should be able to:
● complete simple transposition using +/–
●
complete simple formula transposition using divide, multiply, square and square root.
Instructions
Transpose the following formulae to make the highlighted character the subject of the
formula.
1. A = B – C
(B)
2. A = (C + D) – E + B
(C)
3. V = RI
(I)
4. P = VI
(V)
5. P 
V2
R
(R)
6. P = I2R
(I)
7. V = √(P × R)
(R)
8. R 
P
I2
(I)
9. R 
(ρL )
A
(ρ)
10. P = VICosθ
(Cosθ)
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