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Solution


Q.

Read the passage given below and answer the following questions from (i) to (v).

In a circuit, several resistors may be combined to form a network. The combination must have two endpoints to connect it with a battery or other elements of the circuit. When the resistors are connected in series then the current flowing in each remains the same but potential differences across each resistor will vary. When the resistances are connected in parallel, the potential difference across each resistor will be the same though a different amount of current will flow in each resistor.

 

(ii) The equivalent resistance of two resistors x and y is Z when connected in series and MMM when connected in parallel. Z:M is:
1 xy  
2 x+y×y  
3 (x+y)2xy  
4 xy(2x+2y)  

Ans.

(3)