(a) What is electrical power? Write it's unit. (b) you take two resistors of resistance 2R and 3R and correct them in parallel in an electric circuit . Calculate the ratio of the electric power consumed by 2R and 3R
Answers
Answer:{b}When resistors are connected in parallel, potential difference across them will be equal.
Power = V²/R
Power of resistor with resistance 2R = V²/2R =P1
Power of resistor with resistance 3R = V²/3R =P2
P1:P2 = (1/2R) : (1/3R) = 3:2
Explanation:{b} When resistors are connected in parallel, potential difference across them will be equal.
Power = V²/R
Power of resistor with resistance 2R = V²/2R =P1
Power of resistor with resistance 3R = V²/3R =P2
P1:P2 = (1/2R) : (1/3R) = 3:2
{a} Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries.