Which of the following correctly represents the expression for compound interest?
C.I = [P × (1+R100)n] + P
C.I = [P × (1−R100)n] - P
C.I = [P × (1+R100)n] - P
C.I = [P × (1−R100)n] + P
The correct expression is
Where A = amount invested
R = Rate of interest per annum n = Number of years
When resistors R1 and R2 are connected in series across a battery of potential difference V, the power dissipated by the resistors are P1 and P2 respectively. When they are connected in parallel across a battery of potential difference E, the power dissipated is P3 and P4 respectively. Which one of the following is true?