Question

plz tell me ans of ques 5, 7 ,11 class 12

Answer 1

colour coding :resistance can have put multiple colour bands on it with the help of which we can calculate its value .
kirchhoff laws : are used to solve Complex circuit which consists of multiple batteries and multiple resistances .
1)kirchoff's current law
2)kirchoff's voltage law
1)kirchhoff current law is also called it junction lawor node law.KCL is based on conservation of charge .in an electric circuit the algebraic sum of current at any junction is zero or the sum of the currents entering ejunction is equal to the sum of the currents leaving the junction

2) kirchhoff Voltage law is also called Mesh or loop law .pbl is based on conservation of energy .around any closed loop of a network the algebraic sum of all the EMF and sum of all the voltages is zero called kvl .