1. The simple interest I on a loan is given by the formula

where P is the size of the loan, R is the rate of interest and T is the duration of the loan. If P = £3000, R = 6 % and T = 3 years, calculate the amount of interest I payable.

2. When two electrical resistances of magnitudes r₁ and r₂ respectively are connected in parallel the total effective resistance R is given by the formula

Find the effective resistance R when r₁ = 8 ohms and r₂ = 3 ohms

3. Make u the subject of the formula

4. Make l the subject of the formula

5. Make T the subject of the formula

6. Make u the subject of the formula

7. Make n the subject of the formula

8. Make h the subject of the formula

Transcribed Image Text:

I = PRT 100