A cell of e.m.f. 2 V and internal resistance 1.2 Ω is connected to an ammeter of resistance 0.8 Ω and two resistors of 4.5 Ω and 9 Ω as shown in figure.

Find —

(a) the reading of the ammeter,

(b) the potential difference across the terminals of the cell, and

(c) the potential difference across the 4.5 Ω resistor.

The electrical energy supplied by a source is given by:

1. W = QV
2. W = VIt
3. W = I²Rt
4. All of the above

1 WH is equal to :

1. 3600 J
2. 360 J
3. 36 J
4. 3.6 J

1 kWh is equal to:

1. 3600 J
2. 3.6 x 10⁵ J
3. 3.6 x 10⁶ J
4. 3.6 x 10⁴ J