Q1. What does it mean a circuit closed or open? 
Q2. Define the electric resistance of a wire and also write its SI unit. 

Asked by pdcavita | 26th Nov, 2017, 09:03: PM

Expert Answer:

A closed circuit is the one in which the switch is on and current from the battery can follow in it.
Open circuit is one in which switch is off and current cannot follow in the circuit

Answered by Gajendra | 27th Nov, 2017, 09:42: AM

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