HOW TO MAKE RECHARGEABLE BATTERY CONNECTOR

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STATEMENT-1: lead storage battery is a galvanic cell without salt bridge. STATEMENT-2: A secondary cell is rechargeable cell.

In the circuit shown in figure a 12 V battery with unknown internal resistance r is connected to another battery with unknown emf E and internal resistance 1Omega and to a resistance of 3Omega carrying a current of 2A . The current through the rechargeable battery is 1 A in the direction shown. Figure the unknown current i internal resistance r and the emf E.

Rechargable batteries include which of the those below? (P) Dry cell (Q) Lead-acid storage battery (R ) Nickel -cadmium battery

Some of the batteries are rechareable: I.Fuel cell , II, IV and V III. Lead-storage, IV. Nickel-Cadmimium, V.Lithium . Select the batteries which can be recharged.