Question

A resistance 'R' draws power 'P' when connected to an AC
source. If an inductance is now placed in series with the
resistance, such that the impedance of the circuit becomes
'Z', the power drawn will be [2015]
(a) P √R/Z
(b) P (R/Z)
(c) P (d) P (R/Z)²

Answer 1

Answer:

Power P=irms2R=(RVrms)2R

Power  when inductor is put in series with R: P′=(ZVrms)2R

PP′=R2RZ2R=(ZR)2

P′=P(ZR)2 Please mark the answer as the branliest

Answer 2

Explanation:

In the following situations, identify the agent exerting the force. Also, state

the effect of the force in each case.

(a) Squeezing a piece of lemon between the fingers to extract its juice.

(b) A person diving into a swimming pool.

(c) A labourer moving a loaded cart.

(0) A car coming to rest once its engine is switched off.

te) An athlete making a high jump to clear a bar kept at a certain height. this is not correct answer