Emf of a cell is …………… the terminal voltage when cell is not in use, while …………… the terminal voltage when cell is in use.

1. greater than, smaller than
2. smaller than, greater than
3. equal to, greater than
4. equal to, smaller than

Current drawn from the cell :

1. I = ε[R+r]
2. I = $\dfrac{{\varepsilon}}{{(R + r)}}$
3. I = εR
4. I = $\dfrac{{E}}{{(r)}}$

In parallel combination of resistances :

1. p.d. is the same across each resistance
2. current is the same in each resistance
3. total resistance is increased
4. all of the above are true

Which of the following combinations have the same equivalent resistance between X and Y?