Question

81. The emf of a cell is E, and its internal
resistance is 192. A resistance of 492 is
joined to battery in parallel this is
connected in secondary circuit of potentio
meter the balancing length is 160 cm. If
1V cell balances for 100 cm of potentio
meter wire, the emf of cell E is
1) 17 2) 3V 3) 2V 4) 4V​

Answer 1

Explanation:

• Secondary circuits are those circuits supplied from transformer output windings that are electrically separated from the input windings. A transformer is an electrical component that can be used to step up or down the input ac voltage signal.