Three cells of 1.5V, 2.5V and 3.5 V, respectively, are connected in series to form a battery. Find the e.m.f of the battery.

Four cells, each of e.m.f 1.5 V, are connected in series to form a battery. Find the e.m.f of the bettery.

Four cells of e.m.f. 2.5 V each are connected in series to form a battery, the e.m.f. of the battery is "_______" .

Three cells of emf 2.0 v, 1.8 V and 1.5 V are connected in series. Their internal resistances are 0.05 Omega, 0.7 Omega " and " 1 Omega respectively. If the battery is connected to an external resistor of 4 Omega via a very resistance ammeter, what would be the reading in the ammeter ?

Two capacitors of capacitances 4muF and 6muF are connected in series with a battery of 20 V. find the energy supplied by the battery.

Two cells of voltage 10V and 2 V and internal resistance 10 Omega and 5Omega respectively , are connected in parallel with the pesition and of 10V battery connected to negative pole of 2V battery Find the effected voltage and effected resistance of the combination

A voltmeter of range of 10 V and resistance 5000 Omega is connected in series with a battery and a resistor of 500Omega by mistake. If the voltmeter reading is 8V, what is the emf of the battery? (Neglect internal resistance of battery).