The circuit diagram can be drawn for the given information. The total electromotive force (e.m.f) is 3.0 V and the current passing through the circuit is 1.2 A.
The circuit diagram for the given information can be drawn as follows:
Answer: (a)
To calculate the total electromotive force (e.m.f), we need to determine the total voltage across the circuit. Since the two dry cells are connected in series, their e.m.f values add up. Each dry cell has an e.m.f of 1.5 V, so the total e.m.f is 1.5 V + 1.5 V = 3.0 V. Therefore, the total e.m.f is 3.0 V.
To calculate the current passing through the circuit, we can use Ohm's Law. The total resistance of the circuit can be found by calculating the equivalent resistance of the two resistors connected in parallel. In parallel, the reciprocal of the total resistance is equal to the sum of the reciprocals of the individual resistances. In this case, the total resistance is 1/(1/5 + 1/5) = 2.5 ohms. Using Ohm's Law, I = V/R, we can find the current passing through the circuit: I = 3.0 V / 2.5 ohms = 1.2 A. Therefore, the current passing through the circuit is 1.2 A.
Answer: (b)
i. The total electromotive force (e.m.f) is 3.0 V.
ii. The current passing through the circuit is 1.2 A.